Respuesta :

The height of stack is 36 feet.

What is unitary method?

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value

Given:

height of 1 crate = 3 feet

height of 1 crate in inch = 3*12

= 36 feet

Hence, the height of stack of shipping crates is 36 feet.

Learn more about unitary method here:

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