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26 Apr 2006, 03:47
Kudos
Bookmarks
Water is leaking out from a cylinder at the rate of 0.31m^3 per minute. 10 minutes later, the water level decreases 0.25 meter, what is the value of the radius of the cylinder?
0.5
1.0
1.5
2.0
2.5
0.5
1.0
1.5
2.0
2.5
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26 Apr 2006, 03:54
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volume emptied per minute = 0.31
for 10 minutes = 3.1
volume of cylinder = 22/7 * r^2 * l
here l = 0.25
22/7 * r^2 * 0.25 = 3.1
solving the above equation we get
r = 2
for 10 minutes = 3.1
volume of cylinder = 22/7 * r^2 * l
here l = 0.25
22/7 * r^2 * 0.25 = 3.1
solving the above equation we get
r = 2
26 Apr 2006, 04:11
Kudos
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Water leaking out at 0.31 cubic meter/min
10 mintues --> will have leaked 3.1 cubic meters
Volume of cylinder = pi * r^2 * h
3.1 = pi * r^2 * 0.25
pi*r^2 = 12.4
r = 1.9 (approximately 2)
10 mintues --> will have leaked 3.1 cubic meters
Volume of cylinder = pi * r^2 * h
3.1 = pi * r^2 * 0.25
pi*r^2 = 12.4
r = 1.9 (approximately 2)
