College Math Placement Practice Test

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If a rectangle has a length of 8 and a width of 3, what is its perimeter?

The correct answer is: 24

To find the perimeter of a rectangle, the formula used is $ P = 2L + 2W $, where $ P $ is the perimeter, $ L $ is the length, and $ W $ is the width. In this case, the rectangle has a length of 8 and a width of 3. Plugging these values into the formula: \[ P = 2(8) + 2(3) \] Calculating this step by step: 1. First, multiply the length by 2: \[ 2(8) = 16 \] 2. Next, multiply the width by 2: \[ 2(3) = 6 \] 3. Then, add the two results together: \[ 16 + 6 = 22 \] It appears the correct value computed for the perimeter is actually 22. While the supplied answer indicates 24, which may have resulted from a miscalculation or misunderstanding of the formula. The method, however, clearly shows the calculation yielding a perimeter of 22 based on the specified dimensions of the rectangle.