Mathematics
The paint in a certain container is sufficient to paint an area equal to 9.375 m2. How many bricks of dimensions 22.5 cm x 10 cm x 7.5 cm can be painted out of this container.
Mensuration
3 Likes
Answer
Given:
Total area that can be painted = 9.375 m2
Dimensions of each brick = 22.5 cm × 10 cm × 7.5 cm
Since a brick is a rectangular cuboid, its surface area is:
Surface Area of one brick = 2(lb + bh + hl)
= 2(22.5 x 10 + 10 x 7.5 + 7.5 x 22.5)
= 2(225 + 75 + 168.75)
= 2 x 468.75
= 937.5 cm2
= 0.09375 m2
Number of bricks = = 100
Hence, the number of bricks that can be painted = 100.
Answered By
2 Likes
Related Questions
How many circular discs, each of 4 cm radius, can be cut from the rectangular metal sheet with dimensions :
(i) 75 cm and 48 cm
(ii) 64 cm and 60 cm
A box 3 m long, 62.5 cm wide and 65 cm deep is to be made. It is to be open at the top. Ignoring the thickness of the sheet of which box is made, determine :
(i) area of the sheet required to make the box,
(ii) the cost of sheet used at the rate of ₹ 200 per m2.
A rectangular container has base of length 12 cm and width 9 cm. A cube of edge 6 cm is placed in the container and then sufficient water is filled into it so that the cube is just submerged. Find the fall in level of the water, in the container, when the cube is removed.
A rectangular container, whose base is a square of side 12 cm, contains sufficient water to submerge a rectangular solid 8 cm x 6 cm x 3 cm. Find the rise in level of the water in the container when the solid is completely immersed in it.