r=412

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=412 into the formula for the area of a circle. Pi π is approximately equal to 3.14.

π⋅(412)2

Apply the product rule to 412.

π⋅41222

Raise 41 to the power of 2.

π⋅168122

Raise 2 to the power of 2.

π⋅16814

π⋅16814

Combine π and 16814.

π⋅16814

Move 1681 to the left of π.

1681π4

The result can be shown in multiple forms.

Exact Form:

1681π4

Decimal Form:

1320.25431267…

Find the Area circle (41/2)