Question : what is the formula to get the perimeter of an area for a spiral staircase (to install a frame for the stairs)
planning to have a spiral stairway installed and I need the area measurements to have the frame fabricated. Thanks….
spiral staircase plans

Best answer:

Answer by robling_dwrdesign
pi times radius^2 is area
pi time diameter is circumference
pi is approx 3.14
did I understand the question?