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"What is the approximate area of a circular rug with a circumference of 314 inches? Round to the nearest whole inch. (Use 3.14 for π)

A) 157 in²
B) 314 in²
C) 3,925 in²
D) 7,850 in²"

1 Answer

2 votes

Final answer:

To find the area of the circular rug, we first calculate the radius using the given circumference and then use the radius to find the area using the formula A = πr². The calculated area is approximately 7850 inches².

Step-by-step explanation:

The question asks for the approximate area of a circular rug given its circumference, using 3.14 for π (π represents the mathematical constant pi). First, we calculate the radius (r) of the circle using the circumference (πd or 2πr).

The circumference is given as 314 inches, so:

314 inches = 2 π r

r = 314 inches / (2 × π)

r = 314 inches / (2 × 3.14)

r = 50 inches

Next, we use the radius to calculate the area (A) of the circle using the formula A = πr²:

A = π × (50 inches)²

A = 3.14 × 2500 inches²

A = 7850 inches²

Therefore, the approximate area of the circular rug is 7850 inches², which corresponds to option D.

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