Example: What is the area of a circle whose diameter is 1 cm? Given: Diameter(d) = 1cm; So, Radius(r) = Diameter/2 = 1/2 = 0.5cm Area of a circle: πr2 = π x 0.52 = π x 0.25 = 0.25π sq cm
Example: 2 + |-3| =
1
5
-1
Example: -2 - 3 =
1
-5
-1
Example: The ground floor is represented by 0. If Ned is on the 5th basement, and Susie is 6 floors above his, what floor is Susie on?