Practice
Exercise 7
Formulas
1. Find the circumference of a circle with a
radius of 5 ft.
C = 2
r 1. __________
2. Find the area of a circle with a radius of
4.7 in.
A = 
r
2. __________
3. Find the volume of a cylinder that has a radius of 1.5 feet and a
height
of 4.5 feet.
V = 
r
h 3. __________
4. Find the distance (to the nearest foot) around a circular wading
pool with a radius of 14
feet.
4. __________
5. What is the volume of water a cylindrical water tower can hold if
the tower is 18 ft high and has a 15-ft radius?
Express your answer to the nearest cubic foot.
5. __________