Lateral Surface Area of Prisms

The video tutorial explains how to calculate the lateral surface area of triangular prisms using the formula P times H, where P is the perimeter of the base and H is the height of the prism. It provides two examples, demonstrating the step-by-step process of identifying the base, calculating the perimeter, and multiplying by the height to find the lateral surface area.

What is the formula used to calculate the lateral surface area of a triangular prism?

• 2B plus 2H

• P times H

• P plus B

• B times H

Which of the following is NOT needed to calculate the lateral surface area of a triangular prism?

• Perimeter of the base

• Height of the prism

• Area of the base

• Length of the hypotenuse

In the first example, what is the perimeter of the base of the triangular prism?

• 10

• 12

• 18

• 15

What is the height of the prism in the first example?

• 9

• 8

• 7

• 6

What is the lateral surface area calculated in the first example?

• 72 cm²

• 108 cm²

• 84 cm²

• 96 cm²

In the second example, what is the perimeter of the base of the triangular prism?

• 16

• 15

• 14

• 17

What is the height of the prism in the second example?

• 9

• 8

• 7

• 6

What is the lateral surface area calculated in the second example?

• 128 cm²

• 112 cm²

• 136 cm²

• 120 cm²

Why is the height of the triangle not needed in the lateral surface area calculation?

• It is irrelevant to the prism's dimensions

• It is used only for volume calculations

• It is not part of the lateral surface

• It is already included in the perimeter

What should you do if a side of the triangle is not labeled in the diagram?

• Check if it is labeled elsewhere

• Ignore it in calculations

• Use a ruler to measure it

• Assume it is equal to another side