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amiechap12
16.07.2019 •
Mathematics
Awater tank is in the shape of a cone.its diameter is 50 meter and slantedge is also 50 meter.how much water it can store in it ? it releases water to a gated apartment building at therate of 400 liters per second. in how many minutes tank will be empty?
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Ответ:
(pi*r^2)*h/3
The radius is 50/2 = 25
To find h, we need to use the pythagorean theorem with the slant edge.
a^2 + b^2 = c^2
a^2 + 25^2 = 50^2
a^2 = 1875
a = 43.301 m
pi*25^2*43.301/3 = 28340.44 m^3
1 m^3 = 1000 L
28340.44 m^3 * 1000L = 28,340,440 L
400 L/s
28,340,440L / 400L = 70,851.1 seconds.
70,851.1 / 60 = 1,180.9 minutes.
I think this is right?
Ответ: