Question

find the volume and total surface area of sphere if radius is 21​

Answer 1

Answer:

,

Step-by-step explanation:

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Answer 2

Given

⇒Radius = 21 unit

To Find

a)The Volume of Sphere

b)The total surface area of Sphere

Formula

⇒The Volume of Sphere =4/3 × πr³

⇒The total surface area of Sphere = 4πr²

a) The Volume of Sphere

⇒4/3 × πr³

Where r = 21 unit

⇒4/3 × 22/7 × 21 × 21×21

⇒88/21 × 9261

⇒4.2 × 9261

⇒38896.2 Cubic unit

b) The total surface area of Sphere

⇒ 4πr²

Where r = 21 unit

⇒4×22/7 ×21×21

⇒4×22 × 3 ×21

⇒5544 Sq Unit