If the volume of a sphere is 972π cm3, then find its radius.
Answer & explanation
Correct answer: option 3
We know that,
Volume of sphere = \(\frac{4}{3}\) πr3
We have,
Volume of the sphere = 972π cm3
\(\frac{4}{3}\) πr3 = 972π
= \(\frac{4}{3}\)r3 = 972
= r3 = 972 × (\(\frac{3}{4}\))
= r3 = 729
= r = 9
So, radius = 9 cm