The hypotenuse of a right triangle is 25 cm


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the hypotenuse of a right triangle is 25cm. the difference between the lengths of the other two sides of the triangle is 5cm. find the lengths of these sides.

Answered by admin @



Let the length of the shorter side be x cm.

Then, the length of the shorter side = (x+5) cm

By Pythagoras theorem,

 {x }^{2}  + (x  + 5) ^{2}  =  {25}^{2}

⇒ \:  {x}^{2}  +  {x}^{2}  + 10x + 25 = 625

⇒ \: 2 {x}^{2}  + 10x - 600 = 0

⇒ \: {x}^{2}  + 5x - 300 = 0

⇒ \: (x + 20)(x - 15) = 0

This gives x = 15 or x = - 20

Rejecting x = -20, we get x = 15

 \fbox\bold{Length  \: of \:  Shorter \:  side = 15 cm}

 \fbox \bold{Length \:  of \:  Longer  \: side = 20 cm}


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