Question

A rectangle has a length of 9 inches and a perimeter of 22 inches. What is the width of the rectangle?

Answer 1

$p = 2(l + w)$

$22 = 2(9 + w)$

$\frac{22}{2} = \frac{2(9 + w)}{2}$

$11 = 9 + w$

$11 - 9 = 9 - 9 + w$

$2 = w$

//

$p = 2(9 + 2)$

$p = 2(11)$

$p = 22$