2、2.There is a rectangular photo whose length is twice of its width. Add a board around the photo and the edge of the board is 2 inch longer than each side of the photo. The area in this board is 196。What is the width of the photo?
答案:15。老JJ上问的是length, 答案是30,大家一定要看清楚。
[确认] 15
问题:如WIDTH为15,LENGTH为30,则AREA为450,比BOARD还大,是不是题目条件写错了。作者: tongxun 时间: 2002-11-1 13:26