Question

Calculate the value of C in the triangle below

Answer 1

c = 82 cm

Explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

c² = 18² + 80² = 324 + 6400 = 6724 ( take the square root of both sides )

c =
`√(6724)` = 82