Question

Solve this problem using the proper formula. A lot is in the shape of a trapezoid. The sum of the bases is 280 feet. If the area of the lot is 8,400 square feet, what is the distance across the lot, i.e., the altitude of the figure? The altitude of the trapezoid is feet.

Answer 1

9514 1404 393

Answer:

  60 ft

Step-by-step explanation:

The formula for the area of a trapezoid is ...

  A = 1/2(b1 +b2)h

Fill in the given information and solve for h.

  8400 ft² = (1/2)(280 ft)h

  h = 8400 ft²/(140 ft) = 60 ft

The altitude of the trapezoid is 60 feet.