Why?On minute30 m in 10 seconds and a minute is 60 seconds60 sec (in a minute) ÷ 10 sec = 6So, 30 meters x 6 = 180 metersOn hours180 mpm x 60 minutes (in an hour) = 10,800 meters1 km = 1,000 metersSo, 10,800 meters = 10.8 metersIf anyone thinks it's wrong, Please correct me