Assuming you mean coolant (not water), you probably have a bad head gasket or a cracked head.
Jacket
The water jacket is on the out side of the cylinder and in side the out side casing. If you are wanting to know what is in the water it is anti freeze.
The cylinder should be evacuated
73 + 25 = 98 means that there is 2 ml of space in the cylinder before there is a risk of the liquid overflowing.
With an indirect water heating system and cylinder, the water that circulates around the boiler, pipes and radiators is kept totally separate from the stored water in the cylinder that is used for bathing. From the outside the indirect cylinder looks identical to the direct cylinder save from two additional pipe connections on the side of the cylinder. Inside the cylinder a coil heat exchanger is installed, which allows hot water from the boiler to flow into the upper connection and leave at the lower connection to return to the boiler for re-heating. The hot water in the coil indirectly heats the water in the cylinder. A Direct Cylinder is heated by a source located within the cylinder - such as an electrical immersion heater. Because the Immersion Heater is heating the water 'directly' the cylinder is called a 'Direct Cylinder'. In a direct cylinder there are no other external heat sources.
Because of the water in the cylinder goes slanted...forming a miniscus
This cylinder can hold up to 66.1 gallons of water.
This cylinder will hold up to 3,760.11 gallons of water.
A graduated cylinder is used to measure the volume, or capacity of water. Or to just measure Water.
no but u can get them done
A cylinder with these dimensions has a volume of about 2.61 US gallons of water.
The formula for volume of a cylinder is (pi *r2 )h