Since the diameter is 22 cm the radius is 11 cm or half of that. This time the diameter the distance all the way across the circle or twice its radius is given so well need to halve this to give the radius. The radius is the length from the center of a circle to the edge of the circle.
This time the diameter the distance all the way across the circle or twice its radius is given so well need to halve this to give the radius.
Learn about area in this math video for kids. Area of B ½b h ½ 20m 14m 140m 2. Area b h where b base and h vertical height. How to Calculate Area Area is the space inside the perimeterboundary of space and its symbol is A.