The capacity of a cylindrical tank is 246.4 litres. If the height is 4 metres, what is the diameter of the base? Choose the correct choice from the following answers:
A) 1.4 metres
B) 2.8 metres
C) 28 metres
D) 14 metres
E) none of these
Capacity (volume) of a cylindrical tank = πr2h   (Here r = radius and h = height of the tank)   Now, from the question, 246.4 × 0.001 = 22⁄7 × r2 × 4   [∵ 1 litre = 1000 cm3 = 0.001 m3]   or, 0.2464×7/22×4 = r2   or,r = 0.14 m   or,diameter = 2r = 0.28 m   Answer none of these
<result>E</result>
The capacity of a cylindrical tank is 246.4 litres. If the height is 4 metres, what is the diameter of the base?