Solve.
-The length of a rectangular storage room is 4 feet longer than its width. If the area of the room is 45 square feet, find its dimensions.
A) 6 feet by 10 feet
B) 4 feet by 8 feet
C) 5 feet by 9 feet
D) 4 feet by 10 feet

Question

Quizplus · Accepted Answer

The equation for the area of a rectangle is length * width = area. Let the width be x and the length be x + 4. The equation becomes x(x + 4) = 45. Solving this quadratic equation, x^2 + 4x - 45 = 0, we find that x = 5 (the width), making the length 5 + 4 = 9 feet. Therefore, the dimensions are 5 feet by 9 feet.

Solve. -The Length of a Rectangular Storage Room Is 4 Feet