Answer:
it is the second answer choice
1/4 is equal to 2/8.
2/8+1/8=3/8
Carla used 3/8 of the ribbon in all. So, 5/8 of the ribbon is left.
I hope this helps :)
The answer is the fourth line because it starts with 1 and then you have to subtract 3 from 1 (1-3) and you get -2
Since the ratio of the radius is 3 to 5 let's make them 3x and 5x
(5x^2-3x^2)pi=32
2x^2*pi=32
2x^2=10.18.....didnt round yet
x^2=5.0929...
Now 5x^2*pi=80