The diameter of circle X is 15 centimeters. The diameter is 20 centimeters. Which measurement is the closest to the difference between the circumference of circle X and the circumference of circle Y in centimeters?
15.7
7.85
137
31.4
To find the circumference of a circle, you use the formula C = πd, where C is the circumference and d is the diameter.
For circle X:
Circumference of X = π(15) = 47.1 cm
For circle Y:
Circumference of Y = π(20) = 62.8 cm
The difference between the circumference of circle X and the circumference of circle Y is:
62.8 - 47.1 = 15.7 cm
So, the measurement closest to the difference between the circumference of circle X and the circumference of circle Y in centimeters is 15.7.