CPM Homework Help : INT2 Problem 2-9

Determine the area and perimeter of the trapezoid at right.

Hint:

Recall the formula to find the area of a trapezoid. Try separating the trapezoid
into various shapes when finding missing side lengths.

$A\ =\ \frac{1}{2}\left(b_1\ +\ b_2\right)h$

$A\ =\ 26\ \text{ sq.m},\ P\ =\ 13\ +\ \sqrt{20}+\sqrt{17}\ \approx 21.6\ \text{ m}$

Trapezoid, with dashed segment from top right vertex, perpendicular to bottom side, labeled as follows: Dashed segment, 4 m, top side, 5 m, slanted right side, square root of 20 m, bottom side, 8 m.