Question

The legs of a right triangle are 18cm and 80cm long. What is the length of the hypotenuse?

Answer 1

this is where you would use the pythagorean theorem
a² + b² = c²

remember that a and b are the 2 legs, and c is the hypotenuse

18² + 80² = c²
324 + 6400 = c²
6724 = c²
√6724 = c
82 = c

the length of the hypotenuse is 82cm