Area of a circle

How to calculate the area of a circle, with examples

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How to find the area of a circle

The area = π x Radius 2

Example:
π = 3.14
Radius = 10 cm
Area =  3.14 x 102 
ANSWER : 314 cm2

 

The area can also be calculated using the formula:

The area = (π x Diameter2) ÷ 4

Example:
π = 3.14
Diameter = 20 cm
Area =  (3.14 x 202) ÷ 4
ANSWER : 314 cm2

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