A button has a diameter of 0.80 𝑖𝑛𝑐ℎ𝑒𝑠. What is the exact area of the button in terms of pi (𝜋)? A=πr2 (3 points) Responses A. 0.16π in2 A. 0.16π in2 B. 0.40π in2 B. 0.40π in2 C. 0.64π in2 C. 0.64π in2 D. 0.80π in2

Answer 1

D. 0.80π in2

To find the area of a circle, you use the formula A=πr^2, where r is the radius of the circle. Since the button has a diameter of 0.80 inches, the radius would be half of that, which is 0.40 inches. Plugging this into the formula, we get A=π(0.40)^2 = 0.80π in2.