Area of a Circle

1) Figure the length of the radius (diameter divided by 2) and then multiply it by itself (r squared).

2) The formula is:
Area equals pi multiplied by (r squared)

3) Example: Calculate the area of a circle with a diameter of 12cm. Divide the diameter by two, so 12 divided by 2 =6. Radius times radius, so 6 times 6, or 6 squared =36. The area equals pi times r squared, which in this case is 36, so 3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930381964428810975665933446128475648233786783165271201909145648566923460348610454326648213393607260249141273724587006606315588174881520920962829254091715364367892590360011330530548820466521384146951941511609... times 36, or, to make it simpler, 3.14 times 36 =113.04 (approximately). So, the answer to this question is... 113.04cm squared (approximately)!!

discovered by Kyle