Advertisements
Advertisements
प्रश्न
A truck carrying 7.8 m3 concrete arrives at a job site. A platform of width 5 m and height 2 m is being contructed at the site. Find the length of the platform, constructed from the amount of concrete on the truck?
Advertisements
उत्तर
Total volume of concrete = 7.8 m3
Width of the platform = 5 m
Height of the platform = 2 m
Let the length of the platform = x m
According to the question,
Volume of concrete = Volume used to make platform
∴ 7.8 = 5 × 2 × x
⇒ 7.8 = 10x ...[∵ Volume = Length × Breadth × Height]
⇒ 10x = 7.8
⇒ x = 0.78 m
Hence, the length of the platform is 0.78 m.
APPEARS IN
संबंधित प्रश्न
A cuboidal vessel is 10 m long and 8 m wide. How high must it be made to hold 380 cubic metres of a liquid?
A godown measures 60 m × 25 m × 15 m. Find the maximum number of wooden crates each measuring 1.5 m × 1.25 m × 0.5 m that can be stored in the godown.
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?
If V is the volume of a cuboid of dimensions a, b, c and S is its surface area, then prove that
`1/V=2/S(1/a+1/b+1)`
A metal cube of edge 12 cm is melted and formed into three smaller cubes. If the edges of the two smaller cubes are 6 cm and 8 cm, find the edge of the third smaller cube.
The external dimensions of a closed wooden box are 48 cm, 36 cm, 30 cm. The box is made of 1.5 cm thick wood. How many bricks of size 6 cm x 3 cm x 0.75 cm can be put in this box?
A godown measures 40m × 25 m × 10 m. Find the maximum number of wooden crates each measuring 1.5 m
× 1.25 m × 0.5 m that can be stored in the godown.
How many small cubes with edge of 20 cm each can be just accommodated in a cubical box of 2 m edge?
A birthday cake has two tiers as shown in the figure below. Find the volume of the cake.
 |
 |
Water flows from a tank with a rectangular base measuring 80 cm by 70 cm into another tank with a square base of side 60 cm. If the water in the first tank is 45 cm deep, how deep will it be in the second tank?
