the paint in a certain container is sufficient to paint an area equal to 9.375m square .how many bricks of dimensions 22.5cm.10cm.7.5 cm can be painted out of the container
Answers
9.375m²=93750 cm²
TSA of a Brick= 2(LB+BH+LH)
=2(225+75+168.75)
=937.5cm²
So Bricks can Painted=93750/937.5
=100 Bricks !
Answer:
Hi
Step-by-step explanation:
Surface area:
Surface area of a solid object is a measure of the total area that the surface of the object occupies and it is always measured in square unit.
Hence surface area is also known as total surface area TSA.
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Given:
Dimension of brick = l=22.5 cm, b=10 cm, c=7.5 cm
Total surface area of a container= 9.375 m²
Total surface area of a brick = 2(lb + bh + lh)
= 2(22.5×10 + 10×7.5 + 22.5×7.5)
= 2(225 + 75 + 168.75)
= 2×468.75
= 937.5 cm²
= 937.5/100×100 m²
Number of bricks that painted out of this container= total area painted by containers paint / total surface area of a brick
=9.375/ (937.5/100×100)
=( 9.375×100×100) / 937.5
= 937500/ 9375= 100
Hence,100 bricks can be painted out.
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Hope this will help you...