Oh honey, it's simple math. The circumference of a circle is found by multiplying the diameter by pi (π). So, if you have the diameter in centimeters, just multiply it by 3.14159 to get the circumference in centimeters. Easy peasy lemon squeezy!
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If you want to find the area of a circle in cm you must find out the diameter and times it by Pi (3.14). That's all you have your answer
Area of circle = 78.54 sq cm => Radius of circle = 5 cm => Diameter of circle = 10 cm => Side of square = 10cm => Area of square = 100cm2
The formula is: A = PI(r)^2 A circle with a radius of 29 cm has an area of 2,642.08 square cm.
circumference = 6*pi cm
314.29 cm