Question

Calculate the area of a circle with the radius of 2cm (1dp)

Answer 1

area= pi x r^2

r^2= 2x2=4

area= pi x 4

area=12.5663706144

=12.6 (1 decimal place)

Answer 2

The are of a circle is π * r^2 = 4π ≈ 12.56 ;