Which expression gives the base area of a rectangular prism with length l and width w?

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Sharpen your skills for the Praxis Middle School Mathematics Test. Prepare with a variety of questions, hints, and explanations. Get ready to ace your exam!

Multiple Choice

Which expression gives the base area of a rectangular prism with length l and width w?

Explanation:
The base area of a rectangular prism comes from the rectangle at the bottom, which has side lengths equal to the length and the width. The area of a rectangle is found by multiplying its two side lengths, so the base area is l × w. That’s why the expression l w is the one that describes the base. The other expressions involve height, which is not part of the base; they would describe areas of the side faces rather than the bottom.

The base area of a rectangular prism comes from the rectangle at the bottom, which has side lengths equal to the length and the width. The area of a rectangle is found by multiplying its two side lengths, so the base area is l × w. That’s why the expression l w is the one that describes the base.

The other expressions involve height, which is not part of the base; they would describe areas of the side faces rather than the bottom.

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