By how much should you reduce the radius of a circle with circumference of 48pi cm in order to reduce its area by 47 pi?

Guest Jan 28, 2020

#1**+2 **

Area of the circle before reduction

pi d = circumference pi d = 48 pi so d = 48 and radius = 24

pi r^2 = pi 24^2 = 576 pi

reducit it by 47 pi = 529 pi

now find reduced radius pi r^2 = 529 pi

r^2 = 529 r = 23

Origianl radius was 24 reduce it by ONE to get to new radius of 23

ElectricPavlov Jan 28, 2020