Surface Area of Right Prisms

Vocabulary

100

The amount of space inside the boundaries of a 2-D object.

Area

200

The total area of the surfaces of a 3-D object.

Surface area

300

A 3-D right prism that has a triangular base.

Triangular prism

400

Having the same size and shape.

Congruent

500

A 3-D object with 2 parallel and congruent polygonal faces joined by perpendicular rectangles.

Right prism

Area

100

What is the area of a rectangle with a length of 5m and a width of 3m?

15m²

200

The length of a rectangle is double the width.  The width is 3m.  What is the area?

18m²

300

What is the area of a triangle with a base of 10m and a height of 8m?

40m²

400

A triangle has a base of 500cm and a height that is double the base.  What is the area of the triangle in METERS?

25m²

500

I made a rectangular pizza with a length of 100mm and a width of 5cm.  My brother made a rectangular pizza with a length of 80cm and a width of 5cm. Who's pizza slice covers a larger area, and what is that area?

My brother's slice covers a larger area, and the area is 400cm².

Surface Area

100

A triangular prism has 2 triangular faces with an area of 5m², and 3 rectangular faces areas of 10m². What is the surface area?

40m²

200

A triangular prism has a base with an area of 20m². The rectangular faces of the prism have an area of 30m².  What is the surface area of the triangular prism?

130m²

300

The base face of a rectangular prism has an area of 100m².  The perpendicular rectangular faces have an area of 200m².  What is the surface area of the rectangular prism?

1000m²

400

The base triangular face of a triangular prism has an area of 25m². The prism has a height of 10m. What is the measurement of the base?

5m

500

A rectangular prism has a length of 10m, a width of 2m, and a height of 5m.  What is the surface area?

160m²

Surprise

100

How do you calculate the area of a rectangle?

Length x Width

200

How do you calculate the area of a triangle?

(Base x Height)/2

300

What do we get when we 'unwrap' or 'open' a prism?

A net diagram

400

True or false. The bases of a right prism do not have to be parallel.

False

500

How do you calculate the surface area of a right prism?

Find the area of each face and add all of these areas together.