Re: [計量] 請教幾題計量題!!!
※ 引述《applepenguin (皮)》之銘言：
: BB TEST1 P62
: 11:有一圓通過兩條線在圓內有一交點(圖)
: the areas of the two shaded regions of the circle are equal
: (A) the area of unshaded region A of the circle
: (B) the area of unshaded region of the circle B
: ANS:(D)
: 如果兩個陰影面積一樣的話不是交點就是圓心
: 所以以A和B會一樣大?
這一題沒圖...看不懂題目~
: BB TEST4 P176
: 14:d > 0
: (A)the totalinterest earned on d dollars invested for 3 months at 11 percent
: simple annual interest
: (B)(11d)/(3*100) dollars
: BB TEST7 P.292
: 29:the volume of a cylindrical tank is directly proportional to the height
: and the square of the radius of the tank.
這一段只是告訴你一些常識...
if a certain tank with a radius
: of 10 centimeters has a volume of 20,000 cubic centimeters, what is the
: volume in cubit centimeters, of a tank of the same height with a radius of
: 15 centimeters?
: ANS:45000
圓柱體積 = 原面積 *高
10*10*圓周率 * 高 = 20000
高 = 20000/(10*10*圓周率)
so~
改為半徑15~高不變~
(15*15*圓周率)*高 = (15*15*圓周率) *20000/(10*10*圓周率)
=20000*(9/4) = 45000
: BB TEST8 P.315
: 11:(A)the ratio of the lesser of two consecutive positive intergers to the
: greater
: (B)2/3
: ANS:(D)
: 想請問A的論述the lesser of ...to the greater???
: p.319
: 30:one-kth of a circular pie has been served. if the rest of the pie is divid
: into n equal servings, then each of these servings is what fraction of the
: whole pie?
: ANS:(k-1)/nk
少掉1/k的派，剩下1-1/k，再除以n就得到答案~
(1-1/k)/n = (k-1)/kn~
: 謝謝願意回答的數學高手!!
: p.s.祝大家6G成功:)
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