Find the length of the roof. round to the nearest hundredth of a foot

Split the original triangle down the middle to form two congruent triangles. Focus on one of the two smaller triangles. With 36 degrees as the reference angle, we have 6.25 as the adjacent side and R as the hypotenuse

Use the cosine function

cos(angle) = adj/hyp
cos(36) = 6.25/R
R*cos(36) = 6.25
R = 6.25/cos(36)
R = 7.72542485937369

Multiply both sides by 2 to get
R = 7.72542485937369
2*R = 2*7.72542485937369
2*R = 15.4508497187473

So that rounds to 15.45

15.45 feet

It is 198,87032,750 + 375 = 33145 so, we take the 6% and we make it a decimal (0.6) and multiply that, then that is your answer