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A right triangle has hypotenuse of le...

A right triangle has hypotenuse of length `p\ c m` and one side of length `q\ c m` . If `p-q=1` , find the length of the third side of the triangle.

A

2pq

B

`sqrt(p+q)`

C

`sqrt(p^2+q^2)`

D

`sqrt(2pq)`

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