Bill's new porch is rectangular, with an area of 50 square feet. if the length of the porch is two times the width, what is the perimeter of the porch?

The perimeter of any figure is equal to the sum of the length of the sides of the figure. For a rectangle it is equal to the sum of all four sides and is expressed as:

P = 2L + 2W

However, we are not given the length and width of the rectangle. Instead, we are given the area and the relation of the two dimensions. We use these values as follows:

Area = LW

where L = 2W

50 = L (L/2)

100 = L^2

L = 25 ft

W = 50 ft

Therefore, the perimeter of the rectangular porch would be

P = 2L + 2W

P = 2 (25) + 2 (50)

P = 150 ft