The circumference of a circle with the area of 78.5 square inches is?

Answer 1

To find the circumference of a circle with an area of 78.5 square inches, we first use the formula for the area of a circle, ( A = \pi r^2 ). Solving for the radius ( r ) gives us ( r = \sqrt{\frac{A}{\pi}} = \sqrt{\frac{78.5}{\pi}} \approx 5 ) inches. The circumference ( C ) is then calculated using the formula ( C = 2\pi r ), which gives ( C \approx 2\pi(5) \approx 31.4 ) inches. Thus, the circumference is approximately 31.4 inches.