If the area of a circle is 58 square feet, find the circumference. A. 22.35 ft. B. 26.99 ft. C. 4.25 ft. D. 42.5 ft.
1 answer:
Answer:
B. 26.99 ft.
Step-by-step explanation:
The formulas for circumference (C) and area (A) are ...
A = πr²
C = 2πr
Solving the area formula for r, we get ...
r = √(A/π)
Substituting this into the circumference formula gives ...
C = 2π√(A/π) = 2√(πA)
For the given circle, the numbers are ...
C = 2√(3.14×58 ft²) ≈ 26.99 ft
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