What is the length of the unknown side of the right triangle? A right triangle with hypotenuse x and legs 21 and 20

21
29
400
441

According to Pythagoras theorem,

h² = b² + h²

=> x² = 21² + 20²

=> x² = 441 + 400

=> x = √841

=> x = 29

Thus, the length of the unknown side is 29 units.

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step-by-step explanation:

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