Question

Find the volume of sphere whose surface area is 154 cm

Answer 1

Answer.... Hope it helps!!

Answer 2

Given,

Surface area of sphere is 154 cm^2

Surface area of sphere = 4πr^2

$4 \times \frac{22}{7} \times {r}^{2} = 154\\ {r}^{2} = \frac{154}{4} \times \frac{7}{22}\\{r}^{2} = \frac{49}{4} \\r = \sqrt{ \frac{49}{4} }\\r = \frac{7}{2}\\r= 3.5cm$

Volume of sphere = 4/3πr^3

4/3×22/7×3.5×3.5×3.5

Therefore the volume of sphere is 179.67cm^3.