Answer :
area means the amount of space taken up by the shape
pi =circumference/diameter=aprox 3.141592...
diameter=longest distance from one end of a circle to another, with a straight line
radius=1/2 diameter=distance from the center of the circle to the outside liine
circumference=distance around the circle
pi =circumference/diameter=aprox 3.141592...
diameter=longest distance from one end of a circle to another, with a straight line
radius=1/2 diameter=distance from the center of the circle to the outside liine
circumference=distance around the circle