Question

MARKING AS BRAINLIEST!! (Geometry)

Answer 1

Answer:

x = 15.49

Step-by-step explanation:

As you can see this is a right-angled triangle due to the right angle symbol, we can use Pythagorean theory to find the unknown length:

$a^2 + b^2 = c^2$

In this case, we know C and B but not A so:

$a^2 = c^2 - b^2$

Now plug the values in:

$a^2 = 16^2 - 4^2$

$a^2 = 256 - 16$

$a^2 = 240$

Square root the answer to get A:

$a = \sqrt{240}$

a = 15.49

x = 15.49

Hope this helps!