Answer:
x=11.3 units
Step-by-step explanation:
Here we are given with a right triangle and measurement of two of its sides. We are required to find the measurement of its third side.
Here we are going to use the Pythagoras formula to determine Hypotenuse of a right triangle.
The formula says
[tex]a^2+b^2=c^2[/tex]
Please refer to the image attached with this answer.
Here we have
a= x , b=4 and c=12
Putting these values in the formula we get
[tex]12^2=x^2+4^2[/tex]
[tex]x^2=144-16[/tex]
[tex]x^2=128[/tex]
[tex]x=\sqr{128}[/tex]
[tex]x=11.31[/tex]
