Find the circumference of a circle if its radius is 4.5 cm.

To solve this problem, we introduce a conditional variable “X”, through which we denote the circumference.

Then, applying the formula for the circumference and based on the data of the problem, we will compose the following equation: X = 2 x 3.14 x 4.5.

Solving this equation, we get X equal to 28.26 centimeters.

Answer: The circumference is 28.26 centimeters.



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