Question

What is an algebraic expression to find the number of squares in the border of a 75x75 grid?

Answer 1

Well, if the grip is 75 x 75, you can rule out that the grid is 75 squares in each border.

Explanation:

75 x 75 = a x b

a= horizontal side lengths

b= vertical side lengths

Rule that a= 75 squares and b= 75 squares.