Re: [計量] 兩題
看板GRE (GRE入學考試)作者berryberrybe (berryberryberry)時間17年前 (2008/09/26 23:20)推噓2(2推 0噓 0→)留言2則, 2人參與討論串2/2 (看更多)
※ 引述《tatamich (aurora)》之銘言：
: Q1
: The largest circular tabletop that can be cut from a certain square piece
: of wood has a circumference of 105πinches
: ---------A-------------------- ------------B---------------
: The length of a side 105π
: of the piece of wood
: before the tabletop is
: cut from it
我算是B耶 有錯請指正
半徑=105π/2π 所以正方形邊長=(105/2)*2=105
: Q2
: A retangular rug covers half of a rectangular floor that is 9 feet wide and
: 12 feet long. If the dimensions of the rug are in the same ratio as those
: of the floor, how many feet long is the rug
: a)6
: b)12/2
: c)2√7
: d)6√2
: e)4√6
: Ans:Q1:A Q2:D
: 有OP會自刪
設長為K
K(3/4k)=108/2
k^2=72
k=6√2
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