Question

Curved surface area of a sphere is 616cm square , find the diameter and volume of sphere.

Answer 1

Answer:

Step-by-step explanation:

Answer 2

$4\pi {r}^{2} = 616$
$\pi {r}^{2} = 154$
${r}^{2} = 49$
$r \: = 7cm$
$diameter \: = 2r \: = 14cm$
$volume \: = (4\pi {r}^{2} \times r) \div 3$
$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \: (616 \times 7) \div 3$

$\: \: \: \: \: \: \: \: \: \: \: = \: 1437.34 {cm}^{3} (approx)$