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
Advertisements
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 river 3 m deep and 40 m wide is flowing at the rate of 2 km per hour. How much water will fall into the sea in a minute?
The breadth of a room is twice its height, one half of its length and the volume of the room is 512cu. m. Find its dimensions.
Given that 1 cubic cm of marble weighs 0.25 kg, the weight of marble block 28 cm in width and 5 cm thick is 112 kg. Find the length of the block.
Find the volume of a cuboid whose dimensions are length = 12 cm, breadth = 8 cm, height = 6 cm
Find the volume of a cuboid whose dimensions are length = 60 m, breadth = 25 m, height = 1.5 m
The dimensions of a match box are 6 cm × 3.5 cm × 2.5 cm. Find the volume of a packet containing 12 such match boxes
The volume of a cuboid is 660 cm3 and the area of the base is 33 cm2. Its height is
Volume of regular solids such as cube and cuboid can be found by multiplying the dimensions. Complete the given table by finding the volume of the given objects
| S.No. | Objects | l | b | h | Volume (cubic cm) |
| 1. | Note books | 6 cm | 15 cm | 1 cm | |
| 2. | Name board | 20 cm | 90 cm | 2 cm | |
| 3. | Show case cub board | 70 cm | 250 cm | 70 cm | |
| 4. | Gift box | 10 cm | 10 cm | 10 cm | |
| 5. | Dice | 1 cm | 1 cm | 1 cm |
How many small cubes with edge of 20 cm each can be just accommodated in a cubical box of 2 m edge?
