The height and weight of adolescent boys in my country have the following conversion relationship b=(a-100)*0.9, where a means height (cm) and b means standard weight (kg). According to this relationship, a boy with a standard weight of 58.5 kg , How many centimeters is his height?
我国青少年男生身高和体重之间具有如下换算关系b=(a-100)*0.9，其中a表示身高(cm)，b表示标准体重(kg)，根据这个关系式，一个标准体重58.5千克的男生，他的身高约有多少厘米．
<result>165</result>