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The circumference of a circle is C = 2πr, where C is circumference, π is pi (3.14), and r is radius. C = 2 x 3.14 x 12cm = 75cm = 75/1 cm
circumference = π x diameter ⇒ diameter = circumference ÷ π = 12 cm ÷ π ~= 3.8 cm
To find the diameter of a circle when given the circumference, you can use the formula: circumference = π x diameter. In this case, the circumference is 37.68cm. So, 37.68 = π x diameter. To solve for the diameter, you would divide 37.68 by π, which is approximately 3.14. Therefore, the diameter of the circle would be approximately 12 cm.
34cm
15cm 12cm