A circle of radius 1 is surrounded by 4 circles of radius r as shown. What is r ?
Answer Choices
A. \sqrt{2}
B. 1+\sqrt{2}
C. \sqrt{6}
D. 3
E. 2+\sqrt{2}
A circle of radius 1 is surrounded by 4 circles of radius r as shown. What is r ?
Answer Choices
A. \sqrt{2}
B. 1+\sqrt{2}
C. \sqrt{6}
D. 3
E. 2+\sqrt{2}