Question

# The greenhouse is 40 feet long and the angle at the top of the roof is 90^{\circ}. Determine the volume of the greenhouse in cubic feet.

Conic sections
The front (and back) of a greenhouse have the same shape and dimensions shown below. The greenhouse is 40 feet long and the angle at the top of the roof is $$\displaystyle{90}^{{\circ}}$$. Determine the volume of the greenhouse in cubic feet. Explain your solution.