Question

if the radius of the sphere is halfed then what is the percentage of decrease in its surface area

pls answer fast and correct ​

Answer 1

Answer:

radius = r

Surface area = 4πr²

According To Question,

radius = r/2

Surface area = 4π(r/2)²

= 4πr²/4

Therefore, the percentage of decrease in its surface area = 400%

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