Question

find the radius of a cylindrical water tank whose capacity is 6930 cm cube and its height is 20 CM

Answer 1

I hope this will help you

Answer 2

volume of cylinder = πr^2height
but volume = 6930
height = 20
so after putting the values
22/7*r^2*20=6930
r^2 = 6930*7/22*20
r^2= 63*7/2*2
r^2 = 441/4
r^2 = 110.25
r= √110.25
r= 10.5cm
answer