Surface Area of a Triangle Prism

Surface area of prisms

By Rod Seale

PRISMS: Bases

PRISMS have 2 BASES that name the prism​

• Opposite bases are the same shape

• Opposite bases are congruent

• There are 2 bases and can be any polygon

• Prisms can't have a circle base

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PRISMS: FACES

PRISMS have multiple rectangular faces

• The number of faces a prism has is equal to the number of sides of the prisms base (example triangle = 3)

• Opposite faces are congruent

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Multiple Choice

What kind of prism is this?

• hexagonal

• triangular

• rectangular

• pentagonal

Multiple Choice

What kind of prism is this?

• triangular

• octagonal

• heptagonal

• rectangular

Multiple Choice

How many faces?

• 3

• 2

• 5

• 6

Multiple Choice

How many faces?

• 3

• 6

• 4

• 2

SURFACE AREA of PRISMS​

• Opposite faces & bases are congruent

• Get the area of base - multiply times 2 (for its opposite)

• Get the area of a face - multiply times 2 (for its opposite)

• Account for the area of all faces and bases

• Add them all together together for SURFACE AREA

Subject | Subject

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Multiple Choice

Find the total surface area of the prism.

• 48 square inches
• 64 square inches
• 88 square inches
• 76 square inches

Multiple Choice

Find the surface area of this figure.

• 148 cm²
• 120 cm²

Multiple Choice

Find the surface area of the rectangular prism.

• 94 cm. squared
• 60 cm. squared
• 12 cm. squared
• 19 cm. squared

Multiple Choice

Find the surface area of this figure.

• 148 cm²

• 120 cm²

• 104 cm²

• 74 cm²

Multiple Choice

To calculate the amount of cardboard needed to make a cereal box, which of the following should you find: 

• Area
• Perimenter
• Surface Area
• Volume

Multiple Choice

To calculate the amount of carpeting needed for your bedroom, which of the following should you find: 

• Area
• Perimeter
• Surface Area
• Volume

Multiple Choice

Find the total surface area of the prism.

• 161 square feet
• 1,700 square feet
• 75 square feet
• 186 square feet