Find the circumference and the area for each circle in terms of π.
r = 3 in.
Refer to your formulas:
C = 2πr
A = πr^2
To find the circumference of a circle, you can use the formula:
circumference = 2 * π * r
Given that the radius (r) is 3 inches, we can substitute it into the formula:
circumference = 2 * π * 3
Simplifying the equation gives:
circumference = 6π
Therefore, the circumference of the circle is 6π inches.
To find the area of a circle, you can use the formula:
area = π * r^2
Given that the radius (r) is 3 inches, we can substitute it into the formula:
area = π * 3^2
Simplifying the equation gives:
area = π * 9
Therefore, the area of the circle is 9π square inches.