# Water in a Rectangular Reservoir Having Base 80 M by 60 M I S 6.5 M Deep. - Mathematics

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

#### Solution

Given that,
Flow of water = 15km / hr
=15000m/hr.
Volume of water coming out of the pipe in one hour
20/100xx20/100xx± 5000=600m^3

"Volume of the tank"= 80xx60xx6.5

=31200m^3
∴Time taken to empty the tank
="Volume of tank"/"volume of water coming out of the pipe in one hour"
=31200m^3

=52  hours.

Concept: Volume of a Cuboid
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#### APPEARS IN

RD Sharma Mathematics for Class 9
Chapter 18 Surface Areas and Volume of a Cuboid and Cube
Exercise 18.2 | Q 24 | Page 31

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