Question

lf the surface area of sphere is 616 cm2 then it,s radius is

Answer 1

Hey Mate!
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Here is your answer :
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Given,

TSA of sphere = 616

$4\pi \: {r}^{2} = 616 \\ \\ \pi \: {r}^{2} = \frac{616}{4} \\ \\ \pi \: {r}^{2} = 154 \\ \\ {r}^{2} = 154 \times \frac{7}{22} \\ \\ {r}^{2} = 7 \times 7 \\ \\ {r}^{2} = 49 \\ \\ r = \sqrt{49 } \\ \\ r = 9$

Therefore, Radius = 7cm



HOPE THIS HELPS U...

Answer 2

Surface area of sphere = 4πrsquare
616=4×22/7×r square
616×7/88=r square
49=r square
√49=r
r=7