Surface Area of Rectangular Prisms

8th GradeMath15 min

Learning Objective

I can calculate the surface area of a rectangular prism.

Lesson Flow

Watch Video

5 min

How To Find the Surface Area of Rectangular Prisms|Math Defined with Mrs. C

Math Defined

Guided Notes

5 min

Key concepts students will learn:

  • One way to find the surface area of a rectangular prism is to unfold the prism into a net and find the area of each face.

  • The formula for finding the surface area of a rectangular prism is SA = 2B + pH, where B is the area of the base, p is the perimeter of the base, and h is the height of the prism.

  • When using the net method, remember to find the area of each face and then add all of the areas together.

Practice

10 min

3 questions • Short answer

Exit Ticket

5 min

A rectangular prism has the following dimensions: length = 8 cm, width = 5 cm, and height = 2 cm. What is the surface area of this prism? Show your work.

Teacher Guide

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  • Answer keys for all questions
  • Differentiation strategies
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