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If a Class A fire extinguisher has a rating of 6-A, it must be able to extinguish a certain size wood crib fire.

Answer :

Final answer:

A Class A fire extinguisher with a 6-A rating is capable of extinguishing a fire comparable to 7.5 cubic feet of ignited pinewood. It's essentially equivalent to using 7.5 gallons of water.

Explanation:

In the context of fire safety, if a Class A fire extinguisher has a rating of 6-A, it means it should be able to extinguish a fire equivalent to an initial load of 7.5 cubic feet of ignited pinewood. The number before the letter 'A' in the rating signifies the equivalence in gallons of water, with 1 representing 1.25 gallons of water. So, a '6-A' rating would be equivalent to 7.5 gallons of water used to quench a wood crib fire.

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