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Each of these rectangular prisms is made up of unit cubes.
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Which has a volume of 30 cubic units?
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To find the volume of a rectangular prism, we multiply the length times the width times the height.
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We have to find which rectangular prism has a volume of 30 cubic units.
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Let’s start with figure A.
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We need to find the length, the width, and the height.
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The length is five units.
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The width is two units.
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And the height is three units.
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Now let’s work out the volume using the formula, length times width times height.
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The length is five units multiplied by the width, which is two units, multiplied by the height, which is three units.
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Five times two is 10.
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And ten multiplied by three is 30.
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So the volume of rectangular prism A is 30 cubic units.
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So the answer is figure A has a volume of 30 cubic units.