Question

Find the value of x. Round your answer to the nearest tenth.

Answer 1

So for this, we will be using the pythagorean theorem, which is $leg^2+leg^2=hypotenuse^2$ . 9 is being used instead of 18 because we are using only one half of this triangle.

Firstly, apply the numbers to their place $9^2+20^2=x^2$

Solve the exponents to get $81+400=x^2$

Add up the left half of the equation to get $481=x^2$

And lastly, square root both sides of the equation, and your answer should be $21.9=x$