### Home > MC2 > Chapter 9 > Lesson 9.3.1 > Problem 9-81

9-81.

Find the missing side lengths of each rectangle, (a) and (c) or square (b) and (d).

width

length

interior

To find the area of a rectangle, multiply the length

by the width.Solve for

.

width

interior

length

Recall the properties of a square. All the side lengths must be equal.

Since one side is already given, you can conclude that the other side is also

cm.

width

length

interior

See the help for part (a).

cm

interior

length

width

See the help for part (b).