Understanding the Surface Area of a Triangular Prism

How many faces does a triangular prism have?

• 3

• 4

• 6

• 5

Why do we multiply the area of one of the triangular bases by two when calculating the surface area of a triangular prism?

• Because the prism has two bases

• To double the total surface area

• As a standard mathematical rule

• To account for the height of the prism

What formula is used to calculate the area of a triangle?

• 1/2 Base x Height

• Length x Width

• Base x Height

• Pi x Radius^2

What is the area of the triangular base if the base is 6 inches and the height is 4 inches?

• 48 square inches

• 24 square inches

• 12 square inches

• 20 square inches

What does the 'net' of a 3D shape help with?

• Calculating volume

• Understanding the shape's surface area

• Determining the shape's weight

• Measuring the shape's density

What is the area of the bottom rectangle if its length is 7 inches and width is 6 inches?

• 48 square inches

• 36 square inches

• 13 square inches

• 42 square inches

How many rectangular faces does a triangular prism have?

• 5

• 4

• 3

• 2

If one of the side rectangles has a length of 7 inches and a width of 5 inches, what is its area?

• 25 square inches

• 12 square inches

• 35 square inches

• 40 square inches

What is the total surface area of the triangular prism if the areas of its faces are 12, 12, 42, 35, and 35 square inches?

• 136 square inches

• 146 square inches

• 126 square inches

• 156 square inches

What is the key to getting better at calculating surface areas of 3D shapes?

• Using a calculator

• Skipping difficult problems

• Memorizing formulas

• Practicing problems