Question

Find the CSA of a sphere whose diameter is 42 cm​

Answer 1

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CSA of sphere = 5544 cm^3

Step-by-step explanation:

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Please see the detailed answer in picture.

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Answer 2

Answer:

• 5544 cm²

Step-by-step explanation:

Given

• Diameter of a sphere = 42 cm

To find

• Curved surface area

Solution

➤ Radius of sphere = Diameter/2

Radius of sphere = 42/2

Radius of sphere = 21 cm

➤ Curved surface area of sphere = 4πr²

C.S.A = 4 × 22/7 × 21 × 21

C.S.A = 4 × 22 × 3 × 21

C.S.A = 5544 cm²