Question

find the volume of a sphere of radius 21cm​

Answer 1

Answer:

38,808 cubic cm is the answer for the given problem

Answer 2

Given:-

• Radius of sphere = 21 cm

To find:-

• Volume of sphere

Solution:-

★ Volume of sphere = $\sf \dfrac{4}{3} \pi r^3$

$:\implies$ $\sf \dfrac{4}{ \cancel{3}} \times \dfrac{22}{ \cancel{7}} \times \cancel{21} \times \cancel{21} \times 21$

$:\implies$ 4 × 22 × 21 × 21

$:\implies$ ${\underline{\underline{\sf{\red{38808\;cm^3}}}}}$

$\rule{200}{3}$

★ Additional Information:-

• Total surface area of sphere = 4πr²

• Total surface area of hemisphere = 3πr²

• Curved surface area of hemisphere = 2πr²

• Volume of hemisphere = $\sf \dfrac{2}{3} \pi r^3$

$\rule{200}{3}$