A circle has a radius of 7. What is its circumference in terms of π?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Study for the 7th Grade Math Test. Prepare with quizzes, flashcards, and detailed explanations for each question. Stay ready for your exam!

Multiple Choice

A circle has a radius of 7. What is its circumference in terms of π?

Explanation:
Circles use the circumference formula C = 2πr, which links the distance around the circle to its radius with the constant π. With a radius of 7, the circumference is C = 2 × π × 7 = 14π. So the circumference in terms of π is 14π. You can also use the diameter (which is twice the radius, 14) in C = πd to get C = π × 14 = 14π, which confirms the result. The other numbers would come from a different radius or from dropping π, which isn’t correct for this circle.

Circles use the circumference formula C = 2πr, which links the distance around the circle to its radius with the constant π. With a radius of 7, the circumference is C = 2 × π × 7 = 14π. So the circumference in terms of π is 14π. You can also use the diameter (which is twice the radius, 14) in C = πd to get C = π × 14 = 14π, which confirms the result. The other numbers would come from a different radius or from dropping π, which isn’t correct for this circle.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy