The legs of a right-angled triangle are 60 and 80. Find the hypotenuse of this triangle.

Since this is a right-angled triangle, it means that we can find the third side of the triangle using the Pythagorean theorem.
The square of the hypotenuse is equal to the sum of the squares of the legs. c ^ 2 = a ^ 2 + b ^ 2.
(^ 2 means the number is squared)
Now we can search for the hypotenuse …
c ^ 2 = 60 ^ 2 + 80 ^ 2
c ^ 2 = 3600 + 6400
c ^ 2 = 10000
c = 100
Answer: 100