I need these questions answer for my project:

What is a perfect square?
What is a square root?
What is the rule for multiplying and dividing fractions?

What is a perfect square?

A perfect square is a number whose whose square root is an integer

What is a square root?
A square root is any number multiplied by itself that gives the final product.

What is the rule for multiplying and dividing fractions?
Multiplying fractions, there are no specific rules that I'm aware of, all you need to do is multiply top by top and bottom by bottom.
Dividing fractions requires to flip the second fraction, making it a reciprocal. Then multiply it top by top and bottom by bottom.
Remember when adding, subtracting, multiplying or dividing to make the fraction into lowest terms.