Example: What is the area of a circle whose diameter is 10 cm? Given: Diameter(d) = 10cm;
So, Radius(r) = Diameter/2 = 10/2 = 5cm Area of a circle: πr2 = π x 52 = π x 25 = 25π sq cm
Grades:
7-12
Example:
How do you make 6?
3 x 2
4 x 2
2 x 2
Grades:
3
Example: 22 =
4
Grades:
6
7-12
Example: I am a pencil, long and straight. What am I?