Sphere Crystal
math help!!!!area of a sphere?
1. Emily is placing a gazing ball in one of her customer's gardens. The ball has a diameter of 60cm and will be covered with reflective crystals. one jar of these crystals covers 1m2 (cubed).
a) calculate the surface area, to the nearest square centimetre.
2. the radius of a sphere is 15cm.
a) predict how much the surface area increases if the radius increases by 2cm.
b) calculate the change in surface area, to the nearest square centimetre.
c) how accurate was your prediction?
3. a spherical balloon is blown up from a diameter of 10cm to a diameter of 30cm. by what factor has its surface area increased?
SHOW ALL WORK
1.
a) 11,310
2.
a) 805
b) and c) It's the same... LoL... I didn't predict, I figured it out, so you'll have to "wing that one in".
3.
It's gone from 314.159 to 2827.433
 |
 40mm Blue Mexican Opal Sphere Crystal Ball Gemstone $8.67 Time Remaining: 18d 6h 49m Buy It Now for only: $8.67 Buy It Now |
 ASIAN QUARTZ Clear Crystal Ball Sphere 150MM +stand+AAAA $62.67 (17 Bids) Time Remaining: 6h 34m |
 Wonderful Blue Crystal Quartz Sphere Ball 80mm +stand $0.01 Time Remaining: 1h 38m |
 Wonderful Tibet Clear Crystal Ball Sphere 100MM +Stand $13.07 (3 Bids) Time Remaining: 9h 6m |
 HOT ASIAN QUARTZ Clear Crystal Ball Sphere 60mm +stand $12.99 Time Remaining: 26d 4h 7m Buy It Now for only: $12.99 Buy It Now |
 Natural Lapis Lazuli Crystal Healing SPHERE BALL 50mm $0.01 Time Remaining: 30m |
 B0015 ASIAN QUARTZ CLEAR CRYSTAL BALL SPHERE 80MM +stand++++ $1.61 (5 Bids) Time Remaining: 10h 7m |
 B021 Wonderful Blue Crystal Quartz Sphere Ball 80mm +stand ++++ $4.27 (7 Bids) Time Remaining: 9h 30m |
 2 Picasso Jasper Sphere w Display Stand Crystal Healing $14.95 Time Remaining: 29d 21h 7m Buy It Now for only: $14.95 Buy It Now |
 B015 Natural Obsidian Crystal Sphere Healing BALL 80mm+stand++ $5.86 (6 Bids) Time Remaining: 10h 10m |
 AMETHYST QUARTZ CRYSTAL SPHERE Ball Healing Stone $0.19 (3 Bids) Time Remaining: 9h 58m |
 TOP RAINBOW 136g NATURAL SMOKY CITRINE TRANSPARENT CRYSTAL SPHERE HEALING $0.99 (1 Bid) Time Remaining: 9h 22m |
 Collectibles Obsidian Crystal Sphere Healing 60mm + stand vkd27 $9.89 Time Remaining: 24d 17h 20m Buy It Now for only: $9.89 Buy It Now |
 ASIAN Clear Crystal Ball Sphere 80mm +stand $0.10 Time Remaining: 2h 52m |
 Natural Quartz Rock Crystal Sphere Ball 65 mm+STAND $0.01 (1 Bid) Time Remaining: 1d 21h 40m |
 HOT SELL HUGE ASIAN QUARTZ CLEAR CRYSTAL BALL SPHERE 110MM STAND $1.99 Time Remaining: 3h 25m Buy It Now for only: $1.99 Buy It Now |
 ASIAN QUARTZ CLEAR CRYSTAL BALL SPHERE 150MM +stand+AAAA $48.99 (10 Bids) Time Remaining: 3d 10h 56m |
 B0014 ASIAN QUARTZ CLEAR CRYSTAL BALL SPHERE 100MM +stand++ $7.27 (4 Bids) Time Remaining: 2d 10h 12m |
 B020 Wonderful Blue Crystal Quartz Sphere Ball 80mm +stand ++++ $9.48 (5 Bids) Time Remaining: 1d 10h 57m |
 LOT of 7 crystal spheres Quartz jaspers adventurine + FREE stands $14.99 Time Remaining: 29d 10h 43m Buy It Now for only: $14.99 Buy It Now |
 Wonderful Tibet Clear Crystal Ball Sphere 120 MM AAA $18.49 (4 Bids) Time Remaining: 2d 53m |
 Natural Tigers Eye 80mm quartz crystal sphere ball $15.01 (7 Bids) Time Remaining: 3d 2h 32m |
 Rare Red QUARTZ CRYSTAL SPHERE BALL size80mm +stand $2.70 (2 Bids) Time Remaining: 3d 2h 5m |
 Unakite Sphere with Display Stand Crystal Healing Free Shipping $14.95 Time Remaining: 29d 39m Buy It Now for only: $14.95 Buy It Now |
 Wow Sphere Dragon Egg Septarian Black Crystal Geode Madagascar Septaria Sauvage $50.09 (15 Bids) Time Remaining: 3d 9h |
 BLUE CELESTITE 43 MM GEODE CRYSTAL SPHERE 117 GRAMS FROM MADAGASCAR $21.50 (16 Bids) Time Remaining: 15h 29m |
 SUNSTONE 49 MM GEM STONE CRYSTAL SPHERE CRYSTAL BALL $10.50 (4 Bids) Time Remaining: 12h 18m |
 WHOLESALEHUGE ASIAN QUARTZ CLEAR CRYSTAL BALL SPHERE 80MM + STAND+FREE GIFT $23.88 Time Remaining: 22d 22h 4m Buy It Now for only: $23.88 Buy It Now |
 70mm Round Sphere Amethyst Crystal Healing 11 lb AM753 $66.00 Time Remaining: 5h 20m |
 LAPIS LAZULI 52 MM GEM STONE CRYSTAL SPHERE CRYSTAL BALL FROM AFGHANISTAN $20.52 (9 Bids) Time Remaining: 12h 47m |
 SPECTACULAR 2 ORANGE CALCITE SPHERE 1 2 lb Specimen Crystal STONE HEALING $29.00 Time Remaining: 26d 19h 4m Buy It Now for only: $29.00 Buy It Now |
 B015 Natural Obsidian Crystal Sphere Healing BALL 80mm+stand $9.81 (11 Bids) Time Remaining: 1d 10h 59m |
 COMPLETE RAINBOWNatural Citrine Quartz Crystal Sphere Ball Reiki Healing $4.25 (7 Bids) Time Remaining: 22h 12m |
 SELENITE CRYSTAL HEALING MEDITATION WINDOW SPHERE 64mm Morocco 112 Oz $19.99 (1 Bid) Time Remaining: 20h 46m |
 RARE RAINBOW NATURAL CITRINE CALCITE QUARTZ CRYSTAL SPHERE BALL GEMSTONE 40MM $6.74 Time Remaining: 13d 22h 29m Buy It Now for only: $6.74 Buy It Now |
 B0013 ASIAN QUARTZ CLEAR CRYSTAL BALL SPHERE 100MM +stand++ $26.87 (4 Bids) Time Remaining: 1d 10h 43m |
 LABRADORITE 53 MM Gemstone Crystal SPHERE CRYSTAL BALL BLUE FLASH $9.38 (8 Bids) Time Remaining: 16h 23m |
 HOT SELL HUGE ASIAN QUARTZ CLEAR CRYSTAL BALL SPHERE 80MM STAND $0.01 Time Remaining: 15h 41m |
 Clear Crystal Ball 110mm 42 With Wooden Stand Package $29.85 Time Remaining: 3d 23h 19m Buy It Now for only: $29.85 Buy It Now |
 white clear quartz crystal Sphere dia70 mm +stand $0.01 Time Remaining: 11h 13m |
 138g 7 Natural Green Aventurine Jade Crystal Sphere Ball Healing China V278 $4.45 (7 Bids) Time Remaining: 16h 51m |
 RARE RAINBOW AMETHYST QUARTZ CRYSTAL SPHERE BALL 70mmfQQ $0.01 Time Remaining: 10h 46m |
 Clear Crystal Ball 130mm 5 Include Wooden Stand and Gift Package $41.00 Time Remaining: 27d 22h 3m Buy It Now for only: $41.00 Buy It Now |
 BLUE CELESTITE 44 MM GEODE CRYSTAL SPHERE 154 GRAMS FROM MADAGASCAR $14.58 (4 Bids) Time Remaining: 1d 17h 26m |
 NATURAL preety Lapis Lazuli crystal SPHERE BALL 50MM $0.12 (1 Bid) Time Remaining: 1d 4h 8m |
 Clear Crystal Ball 150mm 6 Include Wooden Stand and Gift Package $63.90 Time Remaining: 4d 22h 7m Buy It Now for only: $63.90 Buy It Now |
 Wonderful Tibet Clear Crystal Ball Sphere 80MM +Stand $0.02 Time Remaining: 9h 21m |
 782g 7pcs Natural Amethyst Quartz Crystal Sphere Ball Healing China S206 $75.00 Time Remaining: 17h 19m |
 Wonderful Tibet Clear Crystal Ball Sphere 80MM +Stand $0.01 Time Remaining: 11h 45m |
 White Quartz Carving Sphere Crystal Ball 80mm $14.25 Time Remaining: 27d 22h Buy It Now for only: $14.25 Buy It Now |
 NATURAL ROSE QUARTZ CRYSTAL SPHERE Healing 60MM+Stand $0.01 Time Remaining: 12h 26m |
 B021 Wonderful Blue Crystal Quartz Sphere Ball 80mm +stand ++++ $7.33 (7 Bids) Time Remaining: 3d 10h 58m |
 NATURAL CLEAR QUARTZ CRYSTAL SPHERE BALL 60mm + stand WW $0.01 Time Remaining: 22h 11m |
 HUGE ASIAN QUARTZ CLEAR CRYSTAL BALL SPHERE 80MM + STAND $19.98 Time Remaining: 21d 23h 51m Buy It Now for only: $19.98 Buy It Now |
 NATURAL QUARTZ CRYSTAL SPHERE BALL Healing 85mm + stand $0.75 Time Remaining: 18h 7m |
 B0015 ASIAN QUARTZ CLEAR CRYSTAL BALL SPHERE 100MM +stand++ $0.87 (3 Bids) Time Remaining: 4d 10h 13m |
 40mm tigereye quartz crystal sphere ball healing $0.01 Time Remaining: 7h 56m |
 LABRADORITE 40 mm SPHERE + STAND CRYSTAL HEALING REIKI GEM STONE WICCA SEER $12.00 Time Remaining: 15d 19h 49m Buy It Now for only: $12.00 Buy It Now |
 CARNELIAN Crystal Sphere Ball 51mm w Stand Madagascar $17.50 (6 Bids) Time Remaining: 2d 18h 52m |
 Collectable Amethyst Quartz Crystal Sphere Ball 45mm $0.19 Time Remaining: 8h 58m |
 200mm 8 SOLID CLEAR CRYSTAL BALL Sphere with Wooden Stand and Gift Box $114.85 Time Remaining: 4d 13h 20m Buy It Now for only: $114.85 Buy It Now |
 1380g Pretty Natural Septarian Dragon Crystal Sphere Ball Madagascar S216 $52.00 Time Remaining: 17h 3m |
 NATURAL rose quartz crystal sphere 40mm $0.01 Time Remaining: 7h 15m |
 56 mm Stromatolite Crystal Sphere Gem Ball Peru 22 $24.99 Time Remaining: 1d 21h 26m Buy It Now for only: $49.99 Buy It Now |
 ASIAN QUARTZ Clear Crystal Ball Sphere 80mm +stand $19.90 Time Remaining: 28d 2h 52m Buy It Now for only: $19.90 Buy It Now |
 UNAKITE 51 MM GEM STONE CRYSTAL SPHERE CRYSTAL BALL $7.50 (7 Bids) Time Remaining: 12h 24m |
 NATURAL ROSE QUARTZ CRYSTAL SPHERE Healing 60MM+Stand $0.01 Time Remaining: 19h 24m |
 tiger eye stone crystal Sphere ball 50MM + Stand $0.01 Time Remaining: 48m |
 Clear Crystal Ball 50mm 2 with Golden Flower Stand Gift Package $15.95 Time Remaining: 21d 5h 59m Buy It Now for only: $15.95 Buy It Now |
 NATURAL ROSE QUARTZ CRYSTAL SPHERE Healing 65MM+Stand $0.01 Time Remaining: 19h 13m |
 RARE RAINBOW AMETHYST QUARTZ CRYSTAL SPHERE BALL 70mmfQQ $0.01 Time Remaining: 21h 38m |
 45mm PYRITE SPHERE Golden Crystal Ball w Stand Peru $2.76 (3 Bids) Time Remaining: 2d 18h 27m |
 18lb Crystal clear white Beautiful Pretty sphere BALL $17.79 Time Remaining: 1d 5h 8m Buy It Now for only: $17.79 Buy It Now |
 RARE 100 NATURAL RAINBOW AMETHYST QUARTZ CRYSTAL SPHERE HEALING BALL 59CM $0.99 Time Remaining: 15h 9m |
 AANATURAL CLEAR QUARTZ CRYSTAL SPHERE BALL Healing 70mm $0.01 Time Remaining: 18h 36m |
 30mm Crystal Ball Prisms Sale Price: $0.07  Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionHung in windows, crystals can bring chi energy from the outside into dark areas of your home or office.A crystal placed in the south-east, north-west, or center of a room can aid in stimulating prosperity...  |
 2" (50mm) Rose Quartz Crystal Sphere Sale Price: $19.99 Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionThis is a beautiful rose quartz sphere measuring 2" (50mm) in diameter |
 Ball Sphere 30% Lead Crystal Faceted Sphere 50mm - 2" inch #701-50 Sale Price: $7.99 Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionHung in windows, crystals can bring chi energy from the outside into dark areas of your home or office.A crystal placed in the south-east, north-west, or center of a room can aid in stimulating prosperity. |
 Jolee's Jewels 3D Sphere Crystal Pendant Sale Price: $9.05 Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionPendants featuring Crystallized - Swarovski Elements are great focal points for necklaces, bracelets or earrings. They can be used alone or in combination with charms and beads to stylize a statement piece... |
 Crystal Spheres Part 1 Sale Price: $0.89 Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product |
 The Universe: From Crystal Spheres to Relativity See Reviews For This Product |
 Chords of the Cosmos: Harmonies of the Zodiac with Crystal Bowls for Chakra Balancing, Meditation & The Healing Arts List Price: Sale Price: $14.03 You save: $2.96 (17%) Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionSerene waves of crystal bowl tones echo the beautiful musical harmonies of the constellations that Pythagoras called the 'Music of the Spheres'. CHORDS OF THE COSMOS fine tunes our entire body to the musical order of the universe with a deeply healing sound journey around the zodiac wheel... |
 Clear Quartz Crystal Sphere "Extra" (5/8" - 1") - 1pc. Sale Price: $6.50 Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionThese are "Extra" high quality cut and polished Clear Quartz Crystal Spheres. These Crystal Spheres are made from extra high quality clear quartz crystal rough. The inclusions and veiling inside these Crystal Spheres are just beautiful! The high vibration of these crystal spheres make these particularly powerful energy pieces... |
 Multicolor Flashing LED Sword with Prismatic Sphere Handle List Price: Sale Price: $9.99 You save: $2.96 (23%) Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionThis is one of our most favorite light-up toys! The lighting effects that it produces are truly mind-blowing. The sword flashes bright with multi-colored effects inside the soft sword's tube, while the prismatic globe creates dazzling effects all around you - on the walls, on the sealing, and everything else around you... |
 Energy Crystal Salt Spheres List Price: Sale Price: $9.49 You save: $3.46 (27%) Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionEnergy is all around us! Trap Earth's Natural Energy TM in your pocket! Carry this feather-weight sphere Himalayan Crystal Salt Energy Ball with you at all times. It will continue to release negative ions in less than desireable situations... |
