Answer:
x =16
Step-by-step explanation:
You can use Theorem Pythagoras method to solve this question.
The formula is a^2 + b^2 =c^2
In this question a=x , b=12, and c= 20
to find a which means x you should use this formula : c^2 - b^2=20^2-12^2
= 400 - 144
=√256
=16
You also can use another method by using the second diagram.
In that diagram you have to know that 12÷3 is 4, 20÷5 is 4, hence x÷4 is 4
so , x=16.
I hope this two ways for answering this question will be helpful for you.
