The perimeter, P, of a rectangle is the distance around it, and can be found by solving the formula P = 2l + 2w, where l is the length and w is the width. What is the length of a rectangle whose perimeter is 30 inches and whose width is 4 inches?
A) 15 inches
B) 11 inches
C) 22 inches
D) 7.5 inches

Question

Quizplus · Accepted Answer

To find the length, we can rearrange the formula to solve for l: P = 2l + 2w. Given P = 30 inches and w = 4 inches, we substitute and get 30 = 2l + 2(4). Simplifying, 30 = 2l + 8, and then 22 = 2l. Dividing both sides by 2, we find l = 11 inches.

The Perimeter, P, of a Rectangle Is the Distance Around