标题: 哪里看出来要乘以2 [打印本页] 作者: waizhongguo 时间: 2006-9-18 11:29 标题: 哪里看出来要乘以2 waht is the combined area, in square inches, of the front and back of a rectangular sheet of paper measuring 8.5 inches by 11 inches.为什么答案是187？哪里看出来要乘以2？作者: iris555999 时间: 2006-9-18 11:31
combined area of front and back