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10. (a) The surface area and volume of a sphere are in the ratio of 3: 7 cm what is the circumference o its great circle and volume? find it ​

User Sbuck
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1 Answer

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15 votes

Answer:

Explanation:

let r be the radius of sphere.

surface area=4πr²


volume=(4)/(3) \pi r^3\\(surface~area)/(volume) =(4\pi r^2)/((4)/(3) \pi r^3) =(3)/(r) =(3)/(7)\\r=7\\circumferece~of~greater~circle=2\pi r=2 * \pi * 7=14\pi

User Mike Zalansky
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