Question 729582
water flows through a circular pipe of diameter 2cm at 7m/sec into a cylindrical vessel of base radius 40cm. by how much the level of water in it rise in 30 min?

the volume flowing in 1 sec is its volume

pi*r^2h

r=1cm
h=700cm

V= pi*1^2*700
=22/7 *1*700
=2200 cm^3

2200cm^3 in 1 sec
in 30 * 60 = 1800 sec

2200*1800 cm^3 

3960000 cm^3 in 30 min

radius = 40 cm

V= pi*r^2 *h 
=22/7 * 40*40*h

3960000=(22/7) *40*40*h

h=7*3960000/40*40*22

787.5 cm in 30 minutes