The circumference and diameter of a circle depend on each other for definition. A circle's circumference is the measurement of its entire border, and its diameter is a straight measurement that goes through the circle's origin between two points on the circumference. The two measurements are bound by pi, which is a-circumference-to-diameter ratio known as 3.142 in simpler calculations, in the equation circumference equals diameter * pi. You can convert a measurement of circumference to its corresponding diameter by the working the equation backward on your calculator.
Instructions
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Enter the circumference into the calculator with the digit keys. For this example, let the circumference be 600.
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Press the key for division. On most calculators, the division key will be signified as either "÷" or "/".
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Press the pi key, which will be represented as "pi" or "π". If you calculator does not have a key for pi, enter "3.142" with the keypad.
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Press "Enter" or the equal sign ("=") to calculate the diameter. Concluding this example, the diameter equals approximately 190.986.