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Question
Find the volume in cubic decimetre of the cube whose side is 75 cm.
Solution
Side of the cube = 75 cm
\[ = 75 \times \frac{1}{10} dm ( \because 1 dm = 10 cm)\]
\[ = 7 . 5 dm\]
\[ \therefore \text { Volume of the cube = (side ) }^3 = (7 . 5 )^3 = 421 . 875 {dm}^3 \]
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