Distance formula, help pls

Which formula finds the probability that a point on the grid below will be in the blue area? p(blue) = total number of squares number of blue squares number of blue squares p(blue) = total number of squares number of blue squares p(blue) = number of white squares

The area of square garden is 300m squared. how long is the diagonal?

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.