Advertisements
Advertisements
प्रश्न
A river 1.5 m deep and 36 m wide is flowing at the rate of 3.5 km/hr. Find the amount of water (in cubic metres) that runs into the sea per minute.
उत्तर
We have,
Depth of the river, h = 1.5 m,
Width of the river, b = 36 m,
Speed of the flowing water,` l = 3.5 "km"//"hr" =(3.5xx1000 "m")/(60 "min") = 175/2 "m"//"min"`
Now,
The amount of water that runs into sea per minute = lbh
`=175/3xx36xx1.5`
= 3150 m3 / min
So, the amount of water that runs into the sea per minute is 3150 m3.
APPEARS IN
संबंधित प्रश्न
A bucket is in the form of a frustum of a cone with a capacity of 12308.8 cm3 of water.The radii of the top and bottom circular ends are 20 cm and 12 cm respectively. Find the height of the bucket and the area of the metal sheet used in its making. (Use 𝜋 = 3.14).
A metal parallelopiped of measures 16 cm x 11 cm x 10 cm was melted to make coins. How many coins were made if the thickness and diameter of each coin were 2 mm and 2 cm respectively?
Water flows at the rate of 10 m / minute through a cylindrical pipe 5 mm in diameter . How long would it take to fill a conical vessel whose diameter at the base is 40 cm and depth 24 cm.
An iron pole consisting of a cylindrical portion 110 cm high and of base diameter 12 cm is surmounted by a cone 9 cm high. Find the mass of the pole, given that 1 cm3 of iron has 8 gram mass approximately. (Use : π = 355/115)
Water flows at the rate of 10 metre per minute from a cylindrical pipe 5 mm in diameter. How long will it take to fill up a conical vessel whose diameter at the base is 40 cm and depth 24 cm?
A spherical ball of diameter 21 cm is melted and recast into cubes, each of side 1 cm. Find the number of cubes so formed.
A hemispherical tank, full of water, is emptied by a pipe at the rate of `25/7` litres per second. How much time will it take to empty half the tank if the diameter of the base of the tank is 3 m?
If the area of the base of a right circular cone is 3850 cm2 and its height is 84 cm, then find the slant height of the cone.
A medicine capsule is in the shape of a cylinder of diameter 0.5 cm with a hemisphere tucked at each end. The length of the entire capsule is 2 cm. The capacity of the capsule is
Two identical cubes each of volume 64 cm3 are joined together end to end. What is the surface area of the resulting cuboid?
