By calculating the linear distance between the two libraries, we can get the distance between Xiao Wang and Xiao Zhang. According to the information provided by the topic, the distances between Xiaowangjia Library and Xiaozhangjia Library are 150m and 220m respectively. We can use Pythagorean theorem to calculate the linear distance between two libraries. Linear distance =√( 1502+2202)≈273.86 meters. Therefore, the distance from Xiao Wang to Xiao Zhang Jia is about 273.86 meters.