The paint in a certain container is sufficient to paint an area of 9.375 square how many bricks measuring 22.5 cm into 10 cm into 7.5 CM can be painted out of the paint in a container
Answers
Answered by
16
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.
========================================================
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.
=========================================================
Hope this will help you...
Answered by
27
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
Similar questions