A button has a diameter of 0.80 𝑖𝑛𝑐ℎ𝑒𝑠.

Question

What is the exact area of the button in terms of pi (𝜋)?



A=πr2


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

C. 0.64π in2

To find the area of the button, we need to use the formula A=πr^2, where r is the radius of the button. Since the diameter is 0.80 inches, the radius is half of that, which is 0.40 inches.

Now, we plug in the radius into the formula: A = π(0.40)^2 = 0.64π in^2.

Therefore, the exact area of the button in terms of pi is 0.64π in^2.