Set up an equation and solve the problem. Suppose that the width of a certain rectangle is 0.3 of its length and the area of that same rectangle is 24.3 square meters. Find the length of the rectangle.
A) 10 meters
B) 9 meters
C) 12 meters
D) 8 meters
E) none of these

Question

Quizplus · Accepted Answer

Let the length be L meters. Then the width is 0.3L meters. The area is given by length × width = L × 0.3L = 24.3. Solving 0.3L^2 = 24.3 gives L^2 = 81, so L = 9 meters.

Set Up an Equation and Solve the Problem