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Question

A rectangular block of wood has dimensions 24 cm by 8 cm by 7 cm. It is cut up into children's bricks.Each brick is a cube of side 3 cm.
Find the largest number of bricks that can be cut from the block.

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Solution

Given: Length of rectangular block (l)=24 cm
Breadth of rectangular block (b)=8 cm
Height of rectangular block (h)=7 cm

Side of cubical brick (s)=3 cm
Let the number of bricks that can be cut from the block be given by
Volume of rectangular block =n × Volume of cubical brick
lbh=n×s3
24×8×7=n×33
24×8×7=n×27
n=24×8×727
n=49.77
So, Largest number of bricks that can b be cut from the block =49.

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