Question

The ratio of the diameters of two circles is 3:5. The circumference of the larger circle is approximately 113.1 m. What is the approximate circumference of the smaller circle?

Answer 1

say radius is r1 and r2. and r1 > r2.
Hence ratio of diameter == ratio of radius = 3.5
=> r1 = 3.5r2

so circumference is in ratio of radius, hence it should be 113.1/3.5