Question

circumference
l of circle ​

Answer 1

Answer:

formulae is

2 pie radius

Answer 2

To calculate the circumference of a circle,

multiply the diameter of the circle with π (pi). The

circumference can also be calculated by

multiplying 2×radius with pi (π=3.14).

Perimeter of semi-circle: πr + 2r

Circumference of Circle: 2πr

Area of semi-circle: πr2/2

Area of circle: πr2