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If a circle has a radius of 7 cm, what is its circumference?
Practice Questions
Q1
If a circle has a radius of 7 cm, what is its circumference?
14π cm
21π cm
28π cm
49π cm
Questions & Step-by-Step Solutions
If a circle has a radius of 7 cm, what is its circumference?
Steps
Concepts
Step 1: Understand that the circumference of a circle can be calculated using the formula: Circumference = 2πr.
Step 2: Identify the radius (r) of the circle. In this case, the radius is 7 cm.
Step 3: Substitute the radius into the formula. So, we have Circumference = 2π * 7.
Step 4: Calculate the multiplication. 2 * 7 = 14.
Step 5: Combine the result with π. So, the circumference is 14π cm.
No concepts available.
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