How many tiles of dimension 22.5cm × 10cm × 7.5 cm can be painted if the paint is just sufficient for the surface area 2812.50
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Given dimensions of tiles is 22.5 cm x 10 cm x 7.5 cm TSA of tile = 2(lb + bh + hl) sq units Hence TSA of tile = 2(22.5 × 10 + 10 × 7.5 + 7.5 × 22.5) sq cm = 2(225 + 75 + 168.75) sq cm = 937.5 sq cm Given paint is sufficient for an area of 2812.50 m2 = 28125000 cm2 Number of tiles that can be painted = (28125000
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Area can be painted =22.5×10×7.5/2812.50
=0.6 cm square
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