If the area of the circle inscribed in triangle ABC is 16π, what is the area of triangle ABC? (A) 80 (B) 81 (C) 82 (D) 83 (E) 84 …

## Scaling Circles

The area of circle is , and the area of circle is . What is ratio of the circumference of circle to the circumference of circle . (A) 2.5 : 1 (B) 5 : 2 (C) 5 : 4 (D) 25 : 16 …