### Home > CC1MN > Chapter 5 Unit 5B > Lesson CC1: 5.3.1 > Problem 5-71

5-71.

Bianca is trying to find the area of this rectangle. She already measured one side as

How do you find area of a rectangle?

If

You might want to rotate your paper so that the placement of the rectangle is more familiar.

The base and height must be perpendicular.