Use the formula (P = 2pi r)
Or use the formula (P = pi d)
(P) = perimeter of the circle
(r) = radius
(d) = diameter
(pi approx 3.14159)
Multiply (2) by (pi) by the radius
Or multiply (pi) by the diameter
Use the formula (P = 2pi r)
Or use the formula (P = pi d)
(P) = perimeter of the circle
(r) = radius
(d) = diameter
(pi approx 3.14159)
Multiply (2) by (pi) by the radius
Or multiply (pi) by the diameter