r=1.2

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=1.2 into the formula for the area of a circle. Pi π is approximately equal to 3.14.

π⋅1.22

Raise 1.2 to the power of 2.

π⋅1.44

Multiply π by 1.44.

4.52389342

Find the Area circle (1.2)