It is a scale.
30km is equal to 3,000,000cm
30 Kilometers = 18.64200 Miles
30 kilometers is 98,425 feet and 2.36 inches.
1 inch is equal to 2.54 centimeters or .0254 meters so there are 39.37007874 inches in 1 meter
1 ft is equal to 12 inches
61 inches is equal to 5 feet and 1 inch
1 foot = 12 inches
12 inches
12 inches
36 inches
about 63,000 inches
12 inches is equal to 1 foot, or 30.48 centimeters