5. Prisms
A prism is a 3 dimensional
figure with at least 3
rectangular faces and top
and bottom face are parallel.
• Rectangular prism
• Triangular prism
6. To find the volume of a prism,
determine the shape of the base
and
1.Calculate area of base
2.Then multiply by the height
9. Solution
1. Determine the type of
base the prism has.
This determines the
name of the prism.
2. Calculate the area of the
base
A = lw
A = 11(5)
A = 55 in2
3. Take the area of the base
and multiply it by the
height.
V = 55(h)
V = 55(4)
V = 220 in3
12. Solution
1. Determine the type of
base the prism has.
This determines the
name of the prism.
2. Calculate the area of the
base
A = ½ bh
A = ½ (4)(4)
A = 8 in2
3. Take the area of the base
and multiply it by the
height.
V = 8(h)
V = 8(6)
V = 48 in3