Question 78399
length of the hypotenuse of a right triangle is 24 meters 
length of one of its legs is 12 meters

By Pythagorean theorem,the length of the other sideis:

  = sqrt[hyp^2 - side^2]
  = sqrt[24^2 - 12^2]
  = sqrt(576 - 144)
  = sqrt(432)
  = 20.8

Thus the length of the other leg = 20.8 meters