Question

The surface area of sphere is 616 CM square find its radius

Answer 1

The surface area of sphere is 616 CM square

Let the radius of the sphere is r cm.

So...
$4\pi \: {r}^{2} = 616$
or, 4x22/7 r² = 616
or, r² = (616 x 7) / (4x22)
or, r² = 49
or, r = 7
so its radius is 7 cm.