Applying pythagorean theorem:-





Answer:
x=4 is the correct answer:)
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given
Age 11 Age 12 Total
Girls 3 5 8
Boys 1 3 4
Required

The number of aged 12 children is:


The total number of children is:

So, we have:


Simplify

Answer:
I am sorry, what is your question? What do you <em>have </em>a question on?