Question

the surface area of a sphere is 616cm find its radius

Answer 1

Hey!
Surface area of sphere = 4πr^2
616=4*22/7*r^2
r^2=616*7/4*22
r^2=7*7
r^2=7cm ANS
hope it helps you

Answer 2

Heya !!!

Given : -
Surface area of shpere = 616cm sq.

$= > 4 \times \pi \times {r}^{2} = 616 \\ \\ = > 4 \times \frac{22}{7} \times {r}^{2} = 616 \\ \\ = > \frac{88}{7} \times {r}^{2} = 616 \\ \\ = > {r}^{2} = 616 \times \frac{7}{88} \\ \\ (616 \div 88 = 7) \\ \\ = > {r}^{2} = 7 \times 7 \\ \\ = > {r}^{2} = 49 \\ \\ = > r = \sqrt{49} \\ \\ = > r = 7$

Radius = 7 cm


Hope it helps.