Question

Find the volume of a spbere whose surface area is 154 cm square​

Answer 1

$\red{ \mathfrak{Answer:-}}$

Surface area of sphere = 154 cm²

Also,

Surface area of sphere = 4πr²

$\bold{154 = 4 \times \frac{22}{7} \times r {}^{2} }$

$\bold{ \implies \: r {}^{2} = \frac{154 \times 7}{22 \times 4} = \frac{1078}{88} = 12.25}$

$\bold{ \implies \: r = 3.5cm}$

Now,

Volume of sphere = 4/3 πr³

$\bold{ = \frac{4}{3} \times \frac{22}{7} \times 3.5 \times 3.5 \times 3.5}$

$\bold{ = 179.66 \: cm {}^{3} } \:$

Answer 2

Answer:

1437.33 cm cubed is the volume of the sphere.