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Answer :
Final answer:
The area of the hula hoop in square inches is 312.8 square inches.
Explanation:
The circumference of a circle can be found using the formula ξr = 2πr, where ξr is the circumference and r is the radius. In this case, the circumference is given as 62.8 inches. Dividing this by 2π will give us the radius. 62.8 / 2π = 10 inches.
The area of a circle can be found using the formula A = πr², where A is the area and r is the radius. Substituting the value of the radius we found earlier, the area is calculated as A = π * 10² = 100π square inches. Since the question asks for the area in square inches, we can use the approximation π ≈ 3.14 to simplify the calculation. 100 * 3.14 = 314 square inches. Therefore, the correct answer is B. 312.8 square inches.
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