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Surface area of a rectangular prism

Teaching Transcript

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What is the surface area of this rectangular prism?

We can find the area of each face, noticing that opposite faces are identical. So the left and right faces are both 4 by 5, and so on.

Then we can just do the calculation and add up the side areas for a total surface area of 184

This math skill teaches how to calculate the surface area of a rectangular prism by finding the area of each face (noting that opposite faces are identical) and summing these areas to get the total surface area.

Skill Practice

Surface area of a rectangular prism

Test your understanding of surface area of a rectangular prism by practicing it! Work through the below exercises to use it in practice.