5 The base of a juice glass is in the shape of a circle with a diameter of 5 centimeters. Which of the following is closest to the circumference of the base of the juice glass? (Use 3.14 for π.)

Question

5 The base of a juice glass is in the shape of a circle with a diameter of 5 centimeters. Which of the following is closest to the circumference of the base of the juice glass? (Use 3.14 for π.) 
A 15.7cm
B 19.6 cm
C 31.4 cm
D 78.5 cm

Amélie · Accepted Answer

so that would be 15.7

oobleck · Answer

Recall that C = πd so, just multiply the two values.