Franklin calculated that a teacup has a circumference of 18.84 centimeters. What is the teacup's diameter?

Question

use 3.14 for pi

Answer 1

C = pi(diameter) so diameter = circumference divided by pi.

 

Using a better value of pi, available on most calculators, you get d = 18.84/pi = 5.996958256 which I would round to 6.00 cm.

 

Using the value 3.14, the answer comes out to be 6, but in general it's best not to lre-round pi for a calculation.