# Into a circular drum of radius 4.2 m and height 3.5m , how many full bags of wheat can be emptied if the space required for wheat in each bag is 2.1 cubic m .

Solution :  We have , $r=4.2m , h=3.5m$

$\therefore$               Volume of the drum  $= (\pi r^2h)m^3=\left \{ 3.15\times(4.2)^2 \times 3.5 \right \}m^3$

Volume of each bag of wheat $=2.1m^3$

$\therefore$              Number of bags      $= \frac{Volume Of Drum}{Volume Of a Bag}=\frac{3.14\times4.2\times 4.2\times3.5}{2.1}$

$\Rightarrow$            Number of bags $=3.14\times8.4\times3.5=92.316=92bags$ nearly

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