\sqrt{ ( } { 17 }^{ 2 } - { 12 }^{ 2 } )
Evaluate
\sqrt{145}\approx 12.041594579
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\sqrt{289-12^{2}}
Calculate 17 to the power of 2 and get 289.
\sqrt{289-144}
Calculate 12 to the power of 2 and get 144.
\sqrt{145}
Subtract 144 from 289 to get 145.
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