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Water flows out through a circular pipe, whose internal diameter is 2 cm @ 0.7 m per second into a cylindrical tank, the radius of whose base is 40 cm.  By how much will the level of water rise in an hour?
Asked by jaychandran1967 | 31 Mar, 2017, 01:11: PM
answered-by-expert Expert Answer
begin mathsize 16px style Let space water space level space rises space in space 1 space hour space be space straight x space cm. Volume space of space cylinder space equals πr squared straight h straight r equals 1 space cm space and space straight h equals 0.7 space straight m equals 70 space cm Water space is space flowing space at space the space rate space of space 0.7 space straight m divided by straight s Volume space of space water space in space one space second space equals space 22 over 7 cross times 1 cross times 1 cross times 70 equals 220 space cm cubed 1 space hours equals 1 cross times 60 cross times 60 space equals space 1800 space seconds in space half space hour space water space flow space will space be space 3600 cross times 220 equals 792000 space cm cubed Volume space of space water space in space the space tank space after space an space hour equals space Volume space of space the space cylindrical space tank space the space radius space of space base space 40 space cm space and space height space is space straight x space cm. Volume space of space cylindrical space tank space equals space 22 over 7 cross times 40 cross times 40 cross times straight x equals 792000 straight x equals 157.5 space cm end style
Answered by Sneha shidid | 31 Mar, 2017, 02:15: PM

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CBSE 10 - Maths
A golf ball is spherical with about 300 - 500 dimples that help increase its velocity while in play. Golf balls are traditionally white but available in colours also. In the given figure, a golf ball has diameter 4-2 cm and the surface has 315 dimples (hemi-spherical) of radius 2 mm. Based on the above, answer the following questions: (i) Find the surface area of one such dimple. (ii) Find the volume of the material dug out to make one dimple. Find the total surface area exposed to the surroundings.
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CBSE 10 - Maths
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CBSE 10 - Maths
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CBSE 10 - Maths
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CBSE 10 - Maths
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CBSE 10 - Maths
Water is flowing through a cylindrical pipe of internal diameter of 2cm into a cylindrical tank of base radius 40 cm at a rate of 0.4 m/s. Determine the rise in water level in the tank in 1/2 hour 
Asked by adalroshan2464 | 10 Mar, 2020, 10:39: PM
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CBSE 10 - Maths
Water is flowing at the rate of 7m/s through a circular pipe whose internal diameter   is of 2 cm into a cylindrical tank , the radius of whose base is 40 cm . Determine the increse in water level in 1/2 hours.
Asked by adalroshan2464 | 10 Mar, 2020, 10:34: PM
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CBSE 10 - Maths
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CBSE 10 - Maths
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