+0  
 
0
48
1
avatar

The radius of a circle is 2 inches. When the radius is doubled, by how many square inches is the area increased? Express your answer in terms of $\pi$.

 Apr 6, 2020
 #1
avatar+252 
0

If the radius is 2 inches long, the area is 4pi square inches. Doubling the radius to 4, the area of that would be 16pi square inches. 16pi-4pi=

 

 

12pi square inches.'

 

 

smileysmileysmiley

 Apr 6, 2020

14 Online Users

avatar
avatar
avatar
avatar