A circle has a radius of 7 inches. What is its area? (Use 3.14 for pi.)
Answer and explanation
Correct answer: A. 153.86 square inches
- Step 1: Area = pi x r x r. Step 2. 3.14 x 7 x 7 = 153.86 square inches. Answer: 153.86 square inches. Why not the others: 43.96 square inches: this is the circumference, not the area. 21.98 square inches: this does not square the radius. 307.72 square inches: this doubles the area.
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