A right triangle

A right triangle has legs with lengths of 24 cm and 21 cm if the length of the hypotenuse, in cm, can be written in the form of 3 sqrt(d), then what is the value of d?

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You need to know the following knowledge to solve this word math problem:

algebra

rearrange variables

arithmetic

square root

planimetry

Pythagorean theorem
right triangle

Grade of the word problem

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