Question:
Given that 1 cubic cm of marble weighs 0.25 kg, the weight of marble block 28 cm in width and 5 cm thick is 112 kg. Find the length of the block.
Solution:
Let the length of the marble block be 'l' cm
Volume of the marble block $=1$ * $b$ * $h \mathrm{~cm}^{3}$
$=1^{*} 28^{*} 5 \mathrm{~cm}^{3}$
Therefore, weight of the marble square = 140l * 0.25 kg
As mentioned in the question, weight of the marble = 112 kgs
Therefore,
$=112=1401 * 0.25$
$\Rightarrow 1=\frac{112}{140 * 0.25}=3.2 \mathrm{~cm}$
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