Given a rectangular solid with the width of 5cm, length of 7cm and height of 4cm. Find the volume of this solid.
Take π = 22/7
The picture below shows the rectangular solid with the width (W) of 5cm, length (L) of 7cm, and height (H) of 4cm.
Since W, L and H have the same unit, we can just multiply the W, L and H together to find the volume as shown:
Now, the calculated number 140, has no meaning unless we include the unit for it. Since W, L and H units are in cm, the unit for volume will be cm3. Hence:
Therefore, the answer is D.
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