Question

Find the missing length.

С
9
c= /[?]
TX
Pythagorean Theorem: a2 + b2 = c2
3



Don’t mind the broken laptop

Answer 1

c =
`√(90)`

Explanation:

Using Pythagoras' identity in the right triangle.

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

c² = 9² + 3² = 81 + 9 = 90 ( take the square root of both sides )

c =
`√(90)`