Big Ideas Math: Modeling Real Life, Grade 7
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Big Ideas Math: Modeling Real Life, Grade 7 View details
Practice Test
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Exercise 1 Page 450

Remember the formula for the surface area of a prism.

62ft^2

We want to calculate the surface area of the given prism.

To calculate the surface area of a rectangular prism, we can use the following formula. S=2l w+2l h+2wh The terms represent the area of the three possible different sized faces. Each term is multiplied by 2 because opposite faces on a rectangular prism have equal dimensions. We are given that l= 5 feet, w= 2 feet, and h= 3 feet so we have enough information to calculate the value of S.
S=2l w+2l h+2wh
S=2( 5)( 2)+2( 5)( 3)+2( 2)( 3)
S=20+30+12
S=62
The surface area is 62ft^2.