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The paint in the container os sufficient to paint an area of 9.375m^2. How many bricks of dimensions 22.5cm X 10cm X 7.5cm can be painted out of this container
Q) The paint in the container is sufficient to paint an area of 9.375m^2. How many bricks of dimensions 22.5cm X 10cm X 7.5cm can be painted out of this container?
Answer:
Given length l = 22.5 cm; b = 10 cm and h = 7.5 cm
The total surface area of a cuboid brick = 2(lh + bh + lb)
The total surface area of a cuboid brick = 2((22.5)(7.5) + (10)(7.5) + (22.5)(10))
= [ 168.75 + 75 + 225] = 468.75 sq cm
Area to painted by one tin = 9.375 m^2 = 9.375 x 100 x 100 cm^2
= 93750 cm^2
Number of bricks that can be painted = 93750/468.75 = 200
Number of bricks that can be painted = 200 Answer
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