### Home > CAAC > Chapter 8 > Lesson 8.1.3 > Problem8-28

8-28.
1. Remember that a square is a rectangle with four equal sides. Homework Help ✎

1. If a square has an area of 81 square units, how long is each side?

2. Find the length of the side of a square with area 225 square units.

3. Find the length of the side of a square with area 10 square units.

4. Find the area of a square with side 11 units.

Take the square root of the area to find the length of each side.

Use the same strategy as part (a).

Use the same strategy as part (a).

$\text{\sqrt{10}\,units}$

Area = (length)(width)