A string is used to show where the floor of a rectangular patio is to be laid.The width of the patio is to be half the l
问题描述：
A string is used to show where the floor of a rectangular patio is to be laid.The width of the patio is to be half the length.If 12 meters of string just fit around the edges of the floor,what is the length of the patio?
答
天台的宽是长的一半,天台的周长是12米,求天台的长?
宽是6/(2+1)=2米
长是2*2=4米