Question

Find the circumference and the area of a circle with diameter 2 cm . Use the value 3.14 for π , and do not round your answers. Be sure to include the correct units in your answers.

Answer 1

Circumference= 2×pi×R
Area= pi× R^2
Since Diameter=2 cm ---> Radius is 2× diameter , so R=4 cm

Circumference=2×3.14×4= 25.12 cm
area=3.14× (4)^2= 50.24 cm^2