Question

The surface area of a sphere is 616cm^2.Find it's radius​

Answer 1

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The surface area of a sphere is 616 cm^2 Find it radius.

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Given,

Surface area of sphere = 4πr^2=616

$= 4 \times \frac{22}{7} \times {r}^{2} = 616$

${r}^{2} = 616 \times \frac{7}{22} \times \frac{1}{4}$

${r}^{2} = 49$

$r = 7$

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Answer 2

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