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9-25.

Find the surface area and volume of the rectangular prism at right. Homework Help ✎

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Each edge of the above rectangular prism is unit.

Surface area is the total area of the surfaces of an object.

Volume is the space that an object occupies:
To find the volume, multiply the volume of one layer by the number of layers.

cubes make up this object.
How many sides act as a surface for the object and count towards the surface area?