How to find the perimeter and area of a rectangle at a scale of 1: 300?

In order to find the perimeter and area of a rectangle on a scale of 1: 300, first measure the length and width of the rectangle. Since the rectangle is depicted at a scale of 1: 300, in order to obtain the true values of the length and width, we must multiply the values obtained by measurements by 300.
Now that we know the true dimensions, we find the perimeter, as the sum of the lengths of the sides, and the area, as the product of the length and width.