A)2.8
b1) 4.5/2.8
b2)impossible because if you want to do trigonometry you can't have that is an angle (Which is 148.1) larger than 90 degrees.
but if its angle BAF then the angle would be 2.8/5.3
c)41.32
this is approximately 6 to 200
divide both by 2
3 to 100
3 to 10^2
3 out of 100
P=2*(5ft +7 ft)
P=2*12 ft
P=24 ft - is the answer
The answer is 6n^3+n^2+6n-4 I hope I helped you!