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A right triangle has one leg that is 7 centimeters. The hypotenuse is 25 centimeters. Find the length of the other leg.

User Stephenye
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1 Answer

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Since this is a right triangle, we can use the Pythagorean Theorem to help us.


(length-of-leg1)^2+(length-of-leg2)^2 = (length-of-hypotenuse)^2\\

Known information:

  • one leg's length: 7 cm
  • hypotenuse's length: 25cm

Now let's plug the known information into the equation:


7^2 + (length-of-leg2)^2=25^2\\(length-of-leg2)^2 = 25^2-7^2\\\\(length-of-leg2)^2 = 576\\\\length-of-leg2=24

Thus the length of the other leg is 24cm.

Hope it helps!

User Razafinr
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