### Home > CC2 > Chapter 1 > Lesson 1.2.7 > Problem1-129

1-129.

Find the area and perimeter of each figure below. Homework Help ✎

a.

The formula to find the area of a parallelogram is (base)(height).

In a parallelogram, opposite sides will have equal length.

Perimeter = 57 in. + 41 in. + 57 in. + 41 in.

Perimeter = 196 in.

Area = (36 in.)(57 in.) = 2052 in.2

b.

The formula to find the area of a triangle is

$\frac{1}{2}\cdot(\text{base})\cdot(\text{height})$

Since this is a right triangle, you can use one of the legs for the height and the other for the base.

Find the perimeter by finding the sum of the given side lengths.