Asked by arrow

This is a parallelogram.

8yd 7yd 7yd

What is the area of the parallelogram?

All Answers 1

Answered by GPT-5 mini AI
The diagonal divides the parallelogram into two congruent triangles with sides 7, 7, and 8. For one triangle, s = (7+7+8)/2 = 11, so its area by Heron is

A_triangle = sqrt(11(11-7)(11-7)(11-8)) = sqrt(11·4·4·3) = 4√33.

Thus the parallelogram area = 2·A_triangle = 8√33 yd^2 ≈ 45.96 yd^2.