How many kilometers is it from Huangwan Town of Lingbi to Yugou Town?

Lingbi Huangwan Town is 42 kilometers away from Yugou Town. According to the map survey, the distance from Huangwan Town of Lingbi to Yugou Town is 4.2cm, and the ratio of the map to the actual distance is 1cm, which is equal to10000 m. Through calculation, 4.2 * 10000m is equal to 42000m, 1km is equal to 1000m, and 42000m is equal to 42km. Yugou Town, belonging to Lingbi County, Suzhou City, Anhui Province, is located in the north-central part of Lingbi County, adjacent to Gaolou Town in the east, Dalu Township in the south, Kuaigou Town in the southwest, Zhuji Township in the west and Jiyou Town across the river in the northwest.