How To: Calculate the area & circumference of a circle

PapaPodcast's Peter shows us how to calculate the Area and Circumference of a Circle. Area is the amount of square units used to cover a circle. Circumference is the units around the edge of a circle. To calculate these two units we must find a radius and diameter. Diameter is a segment that joins two points on a circle and passes through the center of the circle. Radius is half of this amount. Watch the rest of the video to figure out how to use the radius and diameter to get the Area and Circumference!