Question

The surface are of sphere which has a radius is 4cm is?

Answer 1

Answer:

Explanation:

Radius = r = 4 cm

Area of the circle is = 4πr^2

= 4 × 22/7 × (4)^2

= 201.14 cm^2 [Ans.]

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Answer 2

We know,

Surface area of a sphere = 4πr²

• r = 4 cm (Given)

⇒Surface area = 4 × 22/7 × (4)²

⇒Surface area = 4 × 22/7 × 16

⇒Surface area = 88/7 × 16

⇒Surface area = 1408/7

⇒Surface area = 201.14 cm²