Question

A square bulletin board has a side length of 40 inches. How many square inches of construction paper are needed to cover it?​

Answer 1

1600 square inches

Explanation:

The area of a square is the square of the side length.

A = s²

__

For your square, the area is ...

A = (40 in)² = 1600 in²

1600 square inches of paper are needed to cover it.