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Question
The paint in a certain container is sufficient to paint on area equal to 9.375 m2. How manybricks of dimension 22.5 cm × 10 cm × 7.5 cm can be painted out of this container?
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Solution
We know that
Total surface area of one brick = 2 (lb + bh + hl )
`=2[22.5xx10+10xx7.5+22.5xx7.5]cm^2`
`=2[468.75]cm^2`
`=937.5cm^2`
Let n number of bricks be painted by the container
Area of brick= `937 .50 cm^2`
Area that can be painted in the container
`= 93755m^2= 93750cm^2`
`93750 = 93750cm^2`
`n=100`
Thus, 100 bricks can be painted out by the container.
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