Question 10 of 18 in this topic
Difficulty: MediumCircles
If the area of a circle is (121x)π square units, what is the circumference of the circle?
Want a deeper, personalized explanation?
Open the app to get an AI-powered explanation tailored to your mistakes.
Open the appRelated questions
- A circle has center O, and points A and B lie on the circle. The measure of arc AB is 45° and the length of arc AB is 3 inches. What is the circumference, in inches, of the circle?
- Circle A has a radius of 3n and circle B has a radius of 129n, where n is a positive constant. The area of circle B is how many times the area of circle A?
- A circle in the xy-plane has a diameter with endpoints (2, 4) and (2, 14). An equation of this circle is (x − 2) 2 + (y − 9) 2 = r 2 , where r is a positive constant. What is the value of r?