Math, asked by wwivacademy7812, 1 year ago

If the circumference of a circle increases from 4Ï€ to 8Ï€, then its area is

Answers

Answered by Mausam11

1

new cicumference=81€
2×€×r=81€
r=81/2=40.5
its new area=€r^2
164025€

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