Volume of Right Prisms with Polygon Faces

Right Prisms

• Any prism that has two polygon faces that are parallel is considered a right prism. They are named by the polygon that makes up the face.

• Rectangular Prisms have two rectangles as the polygon that makes the base

• Triangular Prisms have two triangles as the polygon that makes the base.

Finding the Volume of Prisms

• To find the volume of any right prism, find the area of the face and multiply by the depth.

Triangular Prisms

Area of the triangular face : = 6cm²

Area of the base multiplied by depth = volume

6cm² · 11cm = 66cm³

Sometimes the Height or Base is Not Given

• You may need to use the Pythagorean Theorem to find the missing value

http://www.google.com/url?sa=i&rct=j&q=triangular+prism+pythagorean+theorem+volume&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http%3A%2F%2Fwww.mathisfunforum.com%2Fviewtopic.php%3Fid%3D20018&ei=A3v3VJfZBdbkoAS1oYCoCA&bvm=bv.87519884,d.cGU&psig=AFQjCNGrgAr95wqCNPnE9bQkuN9OmZZIbA&ust=1425591306316795

Trapezoidal Prism

Pentagonal Prism

6 cm