Hi I have a Probelem which I don\'t really Understand. The question is Here i have to calculate how much water goes in the water tanks From the frame roof of the house which is 17 x 10m. The waters tanks radius 1.25m and a height of 2.1 m Thanks Reply asap! Solution Volume of tank = *r^2*h =10.31 metre cube [ r=1.25, h=2.1] So amount of water goes = 10.31/17*10 =6.063 cm.