The circumference is 20cm. Find its diameter.

univerkov | September 2, 2021 | education

Knowing the formula by which the circumference is calculated, S = 2пR, you can solve this problem and find the diameter of a given circle.

We transform the formula S = 2пR, we get S = пD. The diameter can be calculated from the converted formulas. D = S / n

n – the value is constant and equal in rounded value to 3.14

We calculate with the numerical values of the given problem. 20 / 3.14 = 6.369

Let’s round to tenths and get 6.4 cm.

Answer: The diameter of the circle is 6.4 cm.

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