Answer:

8.1796

Step-by-step explanation:

2.86 x 2.86 = 8.1796

So r = 22.56 and s = 14.27.

e=20

0.25e-0.5=4.5

0.25e=4.5+0.5

0.25e=5

e=5/0.25

Answer: 615.4

if the radius is 14