Cheryl is planning a garden that will be
8x7 feet. She wants it to be raised by 6 inches.
How many cubic feet of topsoil will she need
to add?

To calculate the area of a rectangular prism, you would multiply the length, the width, and the depth. As we want to measure this in cubic feet, we should convert all of the measurements to feet to begin with.

How wide is the garden? (either 7 or 8 feet)

How long is the garden? (Whichever of 7 or 8 wasn’t used)

How deep is this garden? 6 inches.

Well, that’s not feet, right?

How many inches are in a foot? 12.

Divide 6 by 12, what is the answer? .5.

Cheryl is planning a garden that will be 8x7 feet. She wants it to be raised by 6 inches. How many cubic feet of topsoil will she need to add?

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Cheryl is planning a garden that will be
8x7 feet. She wants it to be raised by 6 inches.
How many cubic feet of topsoil will she need
to add?