Advertisements
Advertisements
Question
The number of bricks each measuring 50 cm × 30 cm × 20 cm that will be required to build a wall whose dimensions are 5 m × 3 m × 2 m is
Options
1000
2000
3000
5000
Solution
1000
Explanation;
Hint:
Volume of one brick = 50 × 30 × 20 cm3
Volume of the wall = l × b × h
l = 5 m = 500 cm
b = 3 m = 300 cm
h = 2 m = 200 cm
= 500 × 300 × 200 cm3
No. of bricks
= `"Volume of the wall"/"Volume of one bricks"`
= `(500 xx 300 xx 200)/(50 xx 30 xx 20)`
= 10 × 10 × 10
= 1000 bricks
APPEARS IN
RELATED QUESTIONS
A cuboidal water tank is 6 m long, 5 m wide and 4.5 m deep. How many litres of water can it hold? (1 m3 = 1000l)
The areas of three adjacent faces of a cuboid are x, y and z. If the volume is V, prove that
`V^2` = `xyz`
If the area of three adjacent faces of a cuboid are 8 `cm^2`, 18 `cm^3` and 25 `cm^3`. Find the
volume of the cuboid.
Three metal cubes with edges 6 cm, 8 cm and 10 cm respectively are melted together and formed into a single cube. Find the volume, surface area and diagonal of the new cube.
A field is 200 m long and 150 m broad. There is a plot, 50 m long and 40 m broad, near thefield. The plot is dug 7 m deep and the earth taken out is spread evenly on the field. Byhow many meters is the level of the field raised? Give the answer to the second place of decimal.
The length, breadth and height of a chocolate box are in the ratio 5 : 4 : 3. If its volume is 7500 cm3, then find its dimensions
The volume of a container is 1440 m3. The length and breadth of the container are 15 m and 8 m respectively. Find its height
The length of the longest pole that can be put in a room of dimensions (10 m × 10 m × 5 m) is ______.
A storage tank is in the form of a cube. When it is full of water, the volume of water is 15.625 m3. If the present depth of water is 1.3 m, find the volume of water already used from the tank.
