Question

please solve question no 8

Answer 1

hope it helps!! just put the radius in formula

Answer 2

Answer: let two circles radii be r1& r2 given ratio of radii = 3 / 4 = r1/r2

Then their circumference ratio = 2πr1/2πr2= r1/r2 = 3/4 .

Therefore circumference ratio is 3:4

Hope it help you ,✌️✌️