1. (i)The volume of a cuboid is 7.68 m3. If its length = 3.2 m and height = 1.0 m; find its breadth.
(ii) The breadth and height of a rectangular solid are 1.20 m and 80 cm respectively. If the volume of the cuboid is 1.92 m3, find its length.
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Step-by-step explanation:
Volume of a cuboid of length l, breadth b and height h =l×b×h
Given, volume of the cuboid =7.68m
=>3.2×b×1=7.68m3
=> breadth =2.4m
ii) Volume of a rectangular solid = 1.92 m3
Breadth of a rectangular solid = 1.20 m
Height of a rectangular solid = 80 cm = 0.8 m
We know
Length x Breadth x Height = Volume of a rectangular solid (cubical)
Length x 1.20 x 0.8 = 1.92
Length x 0.96 = 1.92
⇒ Length = 1.92/0.96
⇒ Length = 192/96
⇒ Length = 2m
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