Praxis 5511 Practice Question
Marlene’s circular rug, radius 3 ft, cost $169. Cost per square foot?
Correct Answer: A
Rationale: To find the cost per square foot of Marlene's rug, first calculate its area using the formula for the area of a circle: \(A = \pi r^2\). With a radius of 3 ft, the area is approximately \(28.27\) square feet. Next, divide the total cost of the rug, $169, by the area: \(169 \div 28.27 \approx 5.97\), which rounds to 6.
Option B (12), C (18), and D (24) are incorrect as they overestimate the cost per square foot, indicating a misunderstanding of the area calculation and resulting cost distribution.
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