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The paint in a certain container is sufficient to paint an area equal to 9.375 m2. How many bricks measuring 22.5 cm by 10 cm by 7.5 cm can be painted out of this container?
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- 200
- 1000
- 10
- 100
- 200
Correct Option: D
Whole surface area of a brick = 2 (l × b + b × h + h × l)
= 2 (22.5 × 10 + 10 × 7.5 + 7.5 × 22.5)
= 2 (225 + 75 + 0.75 × 225)
= 2 × 75 (3 + 1 + 0.75 × 3)
= 150 × 6.25 = 937.5 sq. cm.
| ∴ Number of bricks = | = 100 | |
| 937.5 |
