Advertisements
Advertisements
Question
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?
Advertisements
Solution
Rate of water flow = 2 km per hour
`=(2000/60)"m/min"`
`=(100/3)"m/min"`
Depth (h) of river = 3 m
Width (b) of river = 40 m
`"Volume of water flowed in 1 min "=(100/3xx40xx3)m^3=4000m^3`
Therefore, in 1 minute, 4000 m3 water will fall in the sea.
APPEARS IN
RELATED QUESTIONS
The capacity of a cuboidal tank is 50000 litres of water. Find the breadth of the tank, if its length and depth are respectively 2.5 m and 10 m.
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 solid cube of side 12 cm is cut into eight cubes of equal volume. What will be the side of the new cube? Also, find the ratio between their surface areas.
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.
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.
A rectangular tank is 80 m long and 25 m broad. Water flows into it through a pipe whose cross-section is 25 cm2, at the rate of 16 km per hour. How much the level of the water rises in the tank in 45 minutes.
The length, breadth and depth of a pond are 20.5 m, 16 m and 8 m respectively. Find the capacity of the pond in litres
The length of the longest pole that can be put in a room of dimensions (10 m × 10 m × 5 m) is ______.
A carpenter makes a box which has a volume of 13,400 cm3. The base has an area of 670 cm2. What is the height of the box?
