Ah, the beauty of converting measurements! To find the diameter of 12 centimeters in inches, you simply divide 12 by 2.54, because there are 2.54 centimeters in an inch. So, the diameter of 12 centimeters is approximately 4.72 inches. Just remember, there are many ways to express the same idea, and each one is a happy little accident waiting to be discovered.
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The radius of a circle is one-half of the circle's diameter. So if the radius is 12 inches, the diameter is 24 inches.
If the diameter of a circle is 12 inches the circumference is: 37.7 inches (diameter x pi = circumference).
If the diameter of a circle is 12 inches the circumference is: 37.7 inches (diameter x Pi = circumference).
182.88 centimeters. You figure there are 12 inches in 1 foot, so you multiply 12 inches by 6 feet to get 72 inches. Then you figure there are 2.54 centimeters in 1 inch, so you multiply 2.54 by 72 inches to get 182.88 centimeters.
area of circle is pi times diameter squared divided by 4 A = 3.14 x 12 x 12 /4 = 113 square inches