Question

Find the length of the third side. If necessary, round to the nearest tenth.
11
16

Answer 1

11.6

Explanation:

In a right-angled triangle, a ² + b ² = c ². This is Pythagoras' Theorem.

Let's call unknown side A.

we have A² + 11² = 16².

subtract 11² from both sides:

A² = 16² - 11²

= 256 - 121

= 135

A = √135

= 11.6 to nearest tenth