Question

if the volume and surface area of a sphere numerically equal then what is its radius​

Answer 1

Surface area of sphere = 4πr2

volume of sphere is 4/3 πr3

3r² = r^3.

when volume and surface area is equal then the radius will be 3 units

Answer 2

Answer is 【3 unit.】

Step by step explation :-

if the volume and surface area of a sphere numerically equal then

$\frac{4}{3} \pi {r}^{3} = 4\pi {r}^{2} \\ \\ \frac{4}{3} {r}^{3} = 4\pi {r}^{2} \\ \\ \frac{ {r}^{3} }{ {r}^{2} } = 4 \times \frac{3}{4} \\ \\ r = 3 \: unit$

Hope it's help.

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