Answer:
Explanation:
Cross section is the isosceles trapezoid.
Area of trapezoid:
We have one of the bases and the height.
Let the difference of the base lengths is x.
We have:
- (x/2)/h = cot θ ⇒ x = 2h cot θ
The area is:
- A = 1/2(w + w + 2h cot θ)h = (w + h cotθ)h