A pipe line which is 6 m in diameter contains a gate valve. The pressure at the centre of the pipe is 25 N/cm2. If the pipe is filled with specific gravity 0.8, find the force exerted by the oil upon the gate.

A pipe line which is 6 m in diameter contains a gate valve. The pressu

1.	A pipe line which is 6 m in diameter contains a gate valve. The pressure at the centre of the pipe is 25 N/cm2. If the pipe is filled with specific gravity 0.8, find the force exerted by the oil upon the gate.
A.	7.06 MN
B.	14.12 MN
C.	3.53 MN
D.	28.24 MN
Answer» B. 14.12 MN