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Probability
The paint in a certain container is sufficient to paint an area equal to 9.375 m2. How many bricks of dimensions 22.5 cm × 10 cm × 7.5 cm can be painted out of this container?
For a brick
l = 22.5 cm b = 10 cm h = 7.5 cm
∴ Total surface area of a brick = 2 (lb + bh + hl)
= 2(22.5 x 10 + 10 x 7.5 + 7.5 x 22.5)
= 2(225 + 75 + 168.75)
= 2(468.75) = 937.5 cm2 = .09375 m2
∴ Number of bricks that can be painted out
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