The diameter of the base of a cylindrical drum is 35 dm and the height is 24 dm. It is full of kerosene. How many tins each of size 25 cm × 22 cm × 35 cm can be filled with kerosene from the drum ?
a) 120
b) 600
c) 1020
d) 1200
Answer: d
Explanation:
$$\eqalign{
& {\text{Number of tins}} = \frac{{{\text{Voulme of the drum}}}}{{{\text{Volume of each tin}}}} \cr
& = \frac{{\left( {\frac{{22}}{7} \times \frac{{35}}{2} \times \frac{{35}}{2} \times 24} \right)}}{{\left( {\frac{{25}}{{10}} \times \frac{{22}}{{10}} \times \frac{{35}}{{10}}} \right)}} \cr
& = 1200 \cr} $$
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