Question

The radius of the circle above is 4 in. What is the circumference of the circle? (Use = 3.14.)

A. 12.56 in
B. 50.24 in
C. 100.48 in
D. 25.12 in

Answer 1

The circumference of a circle with a radius of 4 inches, using 3.14 for pi, is calculated as 25.12 inches, corresponding to option D.

Step-by-step explanation:

To calculate the circumference of a circle with a radius of 4 inches using 3.14 for π (pi), the formula for circumference, which is C = 2πr, is used. Multiplying 2 times the radius gives us the diameter of the circle, which in this case is 2 x 4 = 8 inches.

Then, we multiply the diameter by pi (3.14) to find the circumference: C = 8 x 3.14 = 25.12 inches. So, the circumference of the circle is 25.12 inches, which corresponds to option D.