8.2 Surface Area of Prisms
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What is surface area?
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The sum of the areas of all of its faces. You can use a two-dimensional representation of a solid, called a net, to find the surface area of the solid.
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Find the surface area of the rectangular prism.
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258 square meters
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Find the surface area of the rectangular prism.
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180 square inches
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Find the surface area of the rectangular prism.
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286 square feet
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Find the surface area of the triangular prism.
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60 square yards
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420 square meters
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Find the surface area of the triangular prism.
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299.32 square feet
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A gift box is the shape of a rectangular prism measures 8 inches by 8 inches by 10 inches. What is the least amount of wrapping paper needed to wrap the gift box?
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448 square inches. The surface area of the box is 448 square inches so that is the least amount of paper needed to cover the box.
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Find the surface area of the triangular prism.
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356 square inches
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Find the surface area of the triangular prism.
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137.1 square cm
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Find the surface area of the rectangular prism.
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314 square meters
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166 square cm
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264 square m
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You want to make a rectangular prism out of cardboard. The base is 3 feet by 4 feet. The height is 2 feet. You have $5.00 and cardboard costs $0.10 per square foot. Do you have enough money? If not, how much more money do you need?
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No, you do not have enough money. You would need $0.20 more.
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Find the surface area of the triangular prism.
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300 square inches
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A pint of paint covers 25 square feet. How many pints should you buy to paint the bean-bag toss ramp with two coats? Assume you will not paint the bottom of the ramp or inside the square hole on the top.
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3 pints
