Question

Find the missing side of each triangle round your answer to the nearest 10th if necessary.

Answer 1

Answer: x = 9

Explanation:

We must use Pythagorean's Theorem, a² + b² = c².

Let a = x

a² + 12² = 15²

a² + 144 = 225

a² = 81

a = 9

x = 9

Hope this helps!