Question

how fire extinguish is useful for controlling the fire​

Answer 1

Answer:

They work by smothering the fire: when you spread a thin layer of foam over a fire, you cut the fuel off from the oxygen around it. Foam extinguishers also help to absorb heat, since the cool foam they release contains a lot of water.

Hope it's helpful dear

Answer 2

$\huge\red{Answer}$

The Fire extinguisher is a device used by the fire brigade personal to control fire. According to the concept of the fire triangle, for the generation of fire, we need three things to be present simultaneously. These are fuel (something which can burn), a heat source (which can ignite the fuel) and air (for a constant supply of oxygen). So, if we remove any one of these resources, the fire can be controlled. Fire extinguishers generally cut off the supply of oxygen to control fire.