What is the circumference of a circle with radius 7?

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Prepare for the AMSOC 26-003 Module A Test. Utilize flashcards and multiple choice questions with hints and explanations. Ace your exam!

Multiple Choice

What is the circumference of a circle with radius 7?

Explanation:
The circumference of a circle is found using the formula C = 2πr, where r is the radius. With a radius of 7, substitute to get C = 2π × 7 = 14π. This also aligns with C = πd, since the diameter is 2r = 14, giving C = π × 14 = 14π. So the circumference is 14π (about 43.98 in decimal form). The factor of 2 comes from the diameter being twice the radius, directly scaling the circumference.

The circumference of a circle is found using the formula C = 2πr, where r is the radius. With a radius of 7, substitute to get C = 2π × 7 = 14π. This also aligns with C = πd, since the diameter is 2r = 14, giving C = π × 14 = 14π. So the circumference is 14π (about 43.98 in decimal form). The factor of 2 comes from the diameter being twice the radius, directly scaling the circumference.

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