Question

The circumference of a circle is proportional to the diameter of a circle. A circle with a diameter of 7m has a circumference of 22 m. What is the scale factor as a decimal, to two decimal places?

Answer 1

3.14

Explanation:

Note that 22 m equals about 3.1428 times 7 m.

In other words, 22 m equals 3.1428 times 7 m.

Thus, the scale factor, to 2 decimal places, is 3.14.