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Water in a rectangular reservoir having base 80m by 60m is 6.5m deep. In what time can the water be emptied by a pipe of which the cross-section is a square of side 20cm, if the water runes through the pipe at the rate of 15 km/hr.

A

26 hours

B

42 hours

C

52 hours

D

65 hours

Text Solution

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The correct Answer is:
C
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S CHAND IIT JEE FOUNDATION-VOLUME AND SURFACE AREA -Section A (Question Bank - 27)
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  2. The volume of a rectangular block of stone is 10368 dm3. Its dimens...

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  4. A water tank is 30 m long, 20 m wide and 12 m deep. It is made of i...

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  5. The sum of the length, breadth and depth of a cuboid is 19cm and it...

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  6. A solid cube with an edge 10 cm is melted to form two equal cubes. The...

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  8. An icecream company makes a popular brand of icecream in a rectangular...

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  9. Three cubes with sides in the ratio 3 : 4 : 5 are melted to form a ...

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  10. A, B, C denote the areas of three co-terminus faces of a cuboid. If P ...

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  11. A cuboid has edges of x cm, 1 cm and 2 cm. The total surface area of t...

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  12. A metallic sheet is of the rectangular shape with dimensions 48 c m...

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  13. Except for one face of a given cube, identical cubes are glued thro...

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  14. A cube having each side of unit length is cut into two parts by plane ...

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  15. A cuboid is formed of 3 edges measuring 3,4 and 5 cm. It is sliced int...

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  16. A square hole of cross - sectional area 4" cm"^(2) is drilled across a...

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  17. The area of a side of a box is 120 sq. cm. The area of the other side ...

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  18. A rectangular tank is 225 m by 162 m at the base. With what speed must...

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  19. Water in a rectangular reservoir having base 80m by 60m is 6.5m dee...

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  20. A cake as shown has three layers , each of which is a cuboid as shown....

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