The paint in a certain container is sufficient to paint an area equal

1.	The paint in a certain container is sufficient to paint an area equal to 9.375 m2. Howmany bricks of dimensions 22.5 cm × 10 cm × 7.5 cm can be painted out of thiscontainer?
Answer» Given: Dimension of brick = l=22.5 cm, b=10 cm, c=7.5cm 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 = 937.5cm² = 937.5/100×100 m² Number of bricks that painted out of thiscontainer= total area painted by containers paint / total surface area of abrick =9.375/ (937.5/100×100) =( 9.375×100×100)/ 937.5 = 937500/ 9375= 100 Hence,100 bricks can be painted out. thx ans is 400

The paint in a certain container is sufficient to paint an area equal to 9.375 m2. Howmany bricks of dimensions 22.5 cm × 10 cm × 7.5 cm can be painted out of thiscontainer?

Answer»

Given:

Dimension of brick = l=22.5 cm, b=10 cm, c=7.5cm

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

= 937.5cm²

= 937.5/100×100 m²

Number of bricks that painted out of thiscontainer= total area painted by containers paint / total surface area of abrick

=9.375/ (937.5/100×100)

=( 9.375×100×100)/ 937.5

= 937500/ 9375= 100

Hence,100 bricks can be painted out.

thx

ans is 400