The perimeter of a square can be found using P = ntn ntn, where n is the length of one side of the square. Which equation could also be used to find the perimeter of a square?

For how answer my question this will be the last question can you answer in math subject

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.