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Question

State whether true or false.
The internal length, breadth and height of a closed box are 1 m, 80 cm and 25 cm respectively. If its sides are made of 2.5 cm thick wood; then the capacity of the box is 0.2m3.

A
True
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B
False
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Solution

The correct option is A True
Given,
The internal length, breadth and height of a closed box are 1m=100cm,80cm and 25cm, respectively.
As its sides are made of 2.5cm, the external length, breadth and
height of the closed box are 100+2(2.5)=105cm,80+2(2.5)=85cm and 25+2(2.5)=30cm, respectively.
Capacity of the box which is cuboidal in shape =105×85×30=267750cm3=0.2m3


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