Question

The paint in a certain container is sufficient to paint an area equal to 9.375 m2 . How many bricks of dimensions 22.5cm x 10cm x 7.5cm can be painted out of this container? ​

Answer 1

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Given :-

♦ paint in a certain container is sufficient to paint an area equal to 9.375 m2.

To find :-

How many bricks of dimensions 22.5cm x 10cm x 7.5cm can be painted out of this container?

Solution :-

No. of bricks that can be painted by the container = Area that can be painted by the container / Surface area of brick

Area that can be painted by the container

=> 9.375 m²

=> 9.375 × (100)² cm²

=> 9.375 × (100000) cm²

=> 93750 cm²

Total surface area of one brick

=> 2 ( lb + bh + lh )

=> [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

No. of bricks that can be painted by the container

=> Area that can be painted by the container / Surface area of brick

=> 93750 / 937.5

=> 937500 / 9375

=> 100

:. 100 bricks can be painted out by the paint of the container.

Answer 2

Answer:

100

Step-by-step explanation:

Given :-

♦ paint in a certain container is sufficient to paint an area equal to 9.375 m2.

To find :-

How many bricks of dimensions 22.5cm x 10cm x 7.5cm can be painted out of this container?

Solution :-

No. of bricks that can be painted by the container = Area that can be painted by the container / Surface area of brick

Area that can be painted by the container

=> 9.375 m²

=> 9.375 × (100)² cm²

=> 9.375 × (100000) cm²

=> 93750 cm²

Total surface area of one brick

=> 2 ( lb + bh + lh )

=> [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

No. of bricks that can be painted by the container

=> Area that can be painted by the container / Surface area of brick

=> 93750 / 937.5

=> 937500 / 9375

=> 100

:. 100 bricks can be painted out by the paint of the container.