Answer:
5. 3.5 cm
1. In any circle, the ratio of the circumference to the diameter is pi.
2. In any circle, the ratio of the diameter to the radius is 2.
3. You can use the decimal number 3.14 or the fraction 22/7 as an approximation for pi.
4. Determine if the radius and diameter of a circle with a diameter of 100 mm and a circle with a diameter of 10 mm are proportional.
yes, 100/10 = 50/5
5. Is the circle represented by a penny similar to the one of a quarter?
Yes, all circles are similar. Their shapes are the same, though the sizes are different.
6. ≈2cm
7. c/d=π 3, 3.14. 22/7
