Question

Find the volume of a beach ball if radius is 21cm

Answer 1

Explanation:

Given: For the spherical ball, diameter (d) = 42 cm To find: Surface area and volume of the beach ball. Radius (r) = d/2 = 42/2 = 21 cm Surface area of sphere= 4πr2 = 4 × 3.14 × (21)2 = 4 × 3.14 × 21 × 21 = 5538.96 cm2 Volume of sphere = 4/3 πr3 = 4/3 × 3.14 × (21)3 = 4 × 3.14 × 7 × 21 × 21 = 38772.72 cm3 ∴ The surface area and the volume of the beach ball are 5538.96 cm2 and 38772.72 cm3 respectively.

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Answer 2

Explanation:

5538.8 it is the correct answer