A prism has a length of l, width of 3 feet, and height of 7 feet.
 The volume of this rectangular prism is 84 ft3.
 What is the length of the prism?
 28 ft
 12 ft
 8 ft
 4 ft
 A prism has a length of l, width of 3 feet, and height of 7 feet.
 The volume of this rectangular prism is 84 ft3.
 What is the length of the prism?
 28 ft
 12 ft
 8 ft
 4 ft