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.
How does it sound:
The square of the hypotenuse is equal to the sum of the squares of the legs. c ^ 2 = a ^ 2 + b ^ 2.
Now we can search for the hypotenuse …
c ^ 2 = 60 ^ 2 + 80 ^ 2
c ^ 2 = 3600 + 6400
c ^ 2 = 10000
c = 100
Answer: 100