Question

Please help solve for missing side!

Answer 1

Explanation:

Use the Pythagoras Theorem to find x

Pythagoras theorem =
`a^2 + b^2 = c^2`

In this case a is 10 c is 20 b is x

Remember that the longest side of a triangle is always named as c

`10^2 + b^2 = 20^2\\100 + b^2 = 400\\b^2 = 400-100\\b^2 = √(300)\\ b = 17.32\\`