Calculate the area of a circle with

A. Radius 10cm
B. Diameter 12cm

1 answer

A. Area = π * (radius)^2
Area = π * (10cm)^2
Area = π * 100cm^2
Area ≈ 314.16 cm^2

B. Area = π * (diameter/2)^2
Area = π * (12cm/2)^2
Area = π * 6cm^2
Area ≈ 113.10 cm^2