One box has an area of 9.375 m 2 of color that can be painted. How many bricks measuring 22.5 cm × 10 cm × 7.5 cm can be painted with the color of this box.
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Step-by-step explanation:
Volume of paint = 9.375 m2 = 93750 cm2
Dimension of brick = 22.5 cm×10 cm×7.5 cm
Total surface area of a brick = 2(lb + bh + lh) cm2
= 2(22.5×10 + 10×7.5 + 22.5×7.5) cm2
= 2(225 + 75 + 168.75) cm2
= 2×468.75 cm2 = 937.5 cm2
Number of bricks can be painted = 93750/937.5 = 100
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