SOLUTION: What is the formula for? Find the length of the equal sides of a right-angled isosceles triangle if the length of its hypotenuse is 40cm.

Algebra ->  Triangles -> SOLUTION: What is the formula for? Find the length of the equal sides of a right-angled isosceles triangle if the length of its hypotenuse is 40cm.      Log On


   

Question 635678: What is the formula for? Find the length of the equal sides of a right-angled isosceles triangle if the length of its hypotenuse is 40cm.
Answer by reviewermath(1029) About Me  (Show Source):
You can put this solution on YOUR website!
Use Pythagorean Theorem:
x%5E2+%2B+x%5E2+=+40%5E2
2x%5E2+=+1600
x%5E2+=+800
x+=+20%2Asqrt%282%29
The length of each leg is equal to highlight%2820%2Asqrt%282%29%29 cm.