Question

The following rectangle has a length of 6 centimeters and an unknown width. If the

perimeter is 21 centimeters, what is the width of the rectangle? Set up an equation, and solve.

Answer 1

The width is 4.5 cm

Explanation:

w + w+ 6 + 6 = 21 Combine like terms

2w + 12 = 21 Subtract 12 from both sides

2w = 9 Divide both sides by 2

w = 4.5