3.14 x 3 =9.42
8 x 4 = 32
32-9.42= 22.58cm squared
I think this is correct, I’m not sure
This is a right triangle, the measure of angle A is 90 degrees.
First thing to do I guess is finding B and C.
tan^-1 (7/12) = 30 degrees
tan^-1 (12/7) = 60 degrees
60 + 30 = 90
180 - 90 = 90. Therefore angle A = 90 degrees
