作者scont ( )
看板GMAT
标题[问题] 几题数学
时间Tue Mar 17 17:04:15 2009
1.What is the number of 360-degree rotations that a bicycle wheel made while
rolling 100 meters in a straight line without slipping?
(1)The diameter of the bicycle wheel,including the tire,was 0.5 meter.
(2)The wheel made twenty 360-degree rotations per minute.
ANS:(A)
想问第一个选项 是要先把他变成半径吗? 然後是用面积算还是?
2.If a certain animated cartoon consists of a total of 17280 frames on film,
how many minutes will it take to run the cartoon?
(1)The cartoon runs without interruption at the rate of 24 frames per second.
(2)It takes 6 times as long to run the cartoon as it takes to rewind the film,
and it takes a total of 14 minutes to do both.
ANS:(D)
想问第二个选项是甚麽意思 看不太懂
感谢~
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