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. - Mathematics

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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.

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Let the length of the block be 1cm

Then, volume = `lxx28xx5cm^3`

∴weight = `140lxx0.25 cm^3`

According to the question 

⇒ `112=1401xx0.25`

⇒ `l=(112)/(1401xx0.25)=3.2cm`


Concept: Volume of a Cuboid
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RD Sharma Mathematics for Class 9
Chapter 18 Surface Areas and Volume of a Cuboid and Cube
Exercise 18.2 | Q 10 | Page 30

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