A ring has a inner circumference of 9 centimeters. If the ring's inner circumference can vary between 8 centimeters and 10 centimeters how can the radius vary? Round your answer to Five decimal places.
A)Radius can vary between 6.48456 centimeters and 10.13212 centimeters.
B)Radius can vary between 1.59577 centimeters and 1.78412 centimeters.
C)Radius can vary between 1.27324 centimeters and 1.59155 centimeters.
D)Radius can vary between 2.54648 centimeters and 3.18310 centimeters.
E)Radius can vary between 0.43239 centimeter and 2.43239 centimeters.

Question

Quizplus · Accepted Answer

The formula for circumference is C = 2πr. Solving for r gives r = C/(2π). For C = 8 cm, r ≈ 1.27324 cm, and for C = 10 cm, r ≈ 1.59155 cm.

A Ring Has a Inner Circumference of 9 Centimeters