+0

0
215
3
+101

The product of two inches and the circumference of a circle, in inches, is equal to the
circle's area. What is the length of the radius of the circle, in inches?

Apr 3, 2020

#1
+2152
+1
Apr 3, 2020
#2
+262
+2

If that is so, the 4r$$\pi$$ is equal ro r^2$$\pi$$ divide both sides by $$r\pi$$ to get r=4

Apr 3, 2020
#3
+112417
+1

2  * 2pi * r   =  pi * r^2       divide  out  pi

4 r   =   r^2        divide  by  r  on both sides

4  =  r

Apr 3, 2020