Question

If the diameter of sphere is doubled the increase in its surface area will be

Answer 1

Answer:

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HERE IS YOUR ANSWER....➡️➡️➡️

Step-by-step explanation:

Let r be the radius of the circle, hence diameter d = 2r

Surface area of sphere = 4πr2 sq units

= π (4r2)

= π (2r)2

= π d2

Given d is doubled

Hence the new diameter is 2d

New surface area = π (2d)2

= 4πd2

Increase in area = 4πd2 – πd2

= 3πd2

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Answer 2

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