r=3cm
The area of a circle is equal to Pi π times the radius r squared.
π⋅(radius)2
Substitute in the value of the radius r=3 into the formula for the area of a circle. Pi π is approximately equal to 3.14.
π⋅32
Raise 3 to the power of 2.
π⋅9
Move 9 to the left of π.
9π(cm)2
Find the Area circle (3cm)