31. Consider 3 circles: A, B, and C. The sum of the radii of Circle A and Circle B is 5 m. The sum of the radii of Circle A and Circle C is 8 m. The sum of the radii of Circle B and Circle C is 7 m. What is the length, in meters, of the radius of Circle C ?
Answer and Explanation
Your Answer is
Correct Answer is E
Explanation
Find the equation system: A+B=5, A+C=8, B+C=7, find C=5