Work out the length x.
14 cm
7 cm
Х

x=12.124

Step-by-step explanation:

Using the Pythagorean Theorem, we know that a^2+b^2=c^2, c being the hypotenuse and a being the shorter of the legs. So, we can do x^2+7^2=14^2.

7^2=49, 14^2=196. 196-49=147. Using a calculator, you can find that the square root of 147=12.124355653... To simplify the answer we round up or down, in this case down for the thousandths space.