Question

What is the length of the side marked y in the figure below

Answer 1

y = 10

Explanation:

using Pythagoras' identity in the right triangle.

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

y² = 6² + 8² = 36 + 64 = 100 ( take square root of both sides )

y =
`√(100)` = 10