This is a perimeter problem. The equation for the perimeter is:
[tex]p = 2l + 2w[/tex]
where l = length of the rectangle (10ft) and w = width of the rectangle (20ft). Put the numbers into the equation and solve for perimeter!
[tex]p = 2(10) + 2(20) = 60[/tex]
The answer is D) 60 ft.
