A circular fountain has a radius of 30 feet. Which expression an be used to find the circumference of the fountain, in feet?
The expression that can be used to find the circumference of the fountain, in feet, is:
C = 2πr
where C represents the circumference and r represents the radius.
In this case, the expression would be:
C = 2π(30)
C = 60π
Therefore, the expression to find the circumference of the fountain is 60π feet.