r=8
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=8 into the formula for the area of a circle. Pi π is approximately equal to 3.14.
π⋅82
Raise 8 to the power of 2.
π⋅64
Move 64 to the left of π.
64π
The result can be shown in multiple forms.
Exact Form:
64π
Decimal Form:
201.06192982…
Find the Area circle (8)