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Example: What is the area of a circle whose radius is 5 cm?
Given: Radius(r) = 5 cm
Area of a circle: πr2 = π x 52 = π x 25 = 25π sq cm
Given: Radius(r) = 5 cm
Area of a circle: πr2 = π x 52 = π x 25 = 25π sq cm
Example:
LCM (least common multiple) of 3 and 6
3
6
9
Example: -22
22
-22
-20
Example: √4 =
2
Example: -4
4
Example: 4
3
Example:
3:7
7
3
4
7
3
7
Example: Rails in a railway track
perpendicular
parallel
Example: ∛8 =
2
Example: 4
=
|-4|
Example: -15, -5, -65, -68, -85
-85, -68, -65, -15, -5
-68, -65, -15, -5, -85
-15, -85, -5, -68, -65
Example: 22
4
22
2
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