The radius of a circle is 12 cm long what would its circumference be
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Step-by-Step Solution
Step 1: Identify the given information
We are given that the radius of the circle, denoted by r, is 12 cm. The radius is the distance from the center of the circle to any point on its boundary.
Step 2: Recall the formula for circumference
The circumference of a circle, denoted by C, is the distance around the circle. The formula to calculate the circumference is C=2πr, where r is the radius and π (pi) is a mathematical constant approximately equal to 3.14159.
Step 3: Substitute the value and calculate
Now, we substitute the given radius r=12 cm into the circumference formula. This gives us C=2×π×12 cm, which simplifies to C=24π cm. We can leave the answer in terms of π for an exact value.