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In a circle, if the radius is 10 cm, what is the circumference?
Practice Questions
Q1
In a circle, if the radius is 10 cm, what is the circumference?
20π cm
10π cm
30π cm
40π cm
Questions & Step-by-Step Solutions
In a circle, if the radius is 10 cm, what is the circumference?
Steps
Concepts
Step 1: Understand that the circumference of a circle is the distance around it.
Step 2: Know the formula for circumference, which is C = 2πr, where r is the radius.
Step 3: Identify the radius given in the question, which is 10 cm.
Step 4: Substitute the radius into the formula: C = 2π(10).
Step 5: Calculate 2 times 10, which equals 20.
Step 6: So now we have C = 20π cm.
No concepts available.
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