The unit of area is the square unit such as m2 cm2 etc. Round to the nearest tenthuse 314or 227. Use 314 for pi.
The formula for the area of a circle is pi multiplied by the radius of the circle squared.
Diagram 1 Area of Circle Concept The area of a circle is all the space inside a circles circumference. Area of a circle is the region occupied by the circle in a two-dimensional plane. It is equal to half the diameter. Use our formulas to find the area of many shapes.