Answer:
I think it would be 
Step-by-step explanation:
using the saying, "Soh Cah Toa" which means Sine is opposite over hypotenuse Cosine is adjacent over hypotenuse and Tangeant is opposite over adjacent and i am assuming that the angles E and F are 45 which means it is 
"20% off regular price" can be calculated by multiplying the regular price by (1.00-0.20), or 0.80. Thus, the discounted price will be 0.80($120), or $96.
A = pi r^2 / 2
if 22mm = radius
then
A = (3.14 * 22^2) / 2
A = 759.88
if 22mm is the diameter
then
A = (3.14 * 11^2) /2
A = 189.97
