Area / Perimeter Worksheet
1 a. Find the missing side length,
when the area is 12 square units.

4
A = 12 square units
1 b.
The side length of a square is 4. Find its area.
 
 
 
 
2 a.
The area of a rectangle is 64 square units, and one of its sides is 8. Find its perimeter.
 
 
 
 
2 b.
Find the perimeter of a rectangle with side lengths 4 and 7.
 
 
 
 
3 a. Find the missing side length,
when the perimeter is 38.

?
 
3 b. Find the missing side length,
when the area is 48 square units.

?
A = 48 square units
Page 2

Answer Key

1 a.  3

 
1 b.  16 square units

 
2 a.  32

 
2 b.  22

 
3 a.  10

 
3 b.  6

 


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