Name ____________________________________________ 2/10/2012
Solve the equation.	Circle your answer.
1. 3x = 15		2.  24 = 6x		3.  2x + 4 = 10	4.   2.4x + 9.35 = 20.8



Circle the letter of the correct answer.
5. A square has an area of 25 square feet. Find the length of the side.
a. 20 feet		b. 5 feet
c. 4 square feet	d. 16 square feet

6. A rectangle has an area of 20 square feet. Which of these are NOT 
the dimensions of the rectangle?
a. 4 feet by 5 feet	b. 2 feet by 10 feet
c. 1 foot by 20 feet	d. 3 feet by 6 feet

7. A rectangular prism has a volume of 60 cubic centimeters. If the 
length is 4 cm and the height is 5 cm, what is the width?
a. 2 cm	b. 3 cm	c. 4 cm	d. 6 cm

8. A circle has an area of 50.24 square meters. What is the radius 
of the circle?
a. 16 m	b. 4 m		c. 9 m		d. pi m

9. A cylinder has a base area of 12 square inches. If the height is 
6 inches, what is the volume?
a. 72 cubic inches		
b. 2 inches
c. 226.08 cubic inches	
d. 3 inches

10. A cylinder has a volume of 21 cubic meters. What is the volume of 
the cone with exactly the same height and radius?
a. 10.5 meters	b. 7 meters
c. 7 cubic meters	d. 14 cubic meters

Name ____________________________________________ 2/10/2012
To find a missing dimension given surface area or volume:
1st:   Select the appropriate formula.
2nd:  Fill in all the known information.
3rd:  Simplify the formula.
4th:  Solve the equation for the unknown information.
5th:  Check your answer to see if it makes sense.

1. A cylinder has a surface area of 282.6 square feet. The radius is 3 ft. 
but the height is unknown. Find the height.






2. A cylinder has a radius of 2 cm and a surface area of 100.48 cm².  
Find the height.