[計量] 求教計量三題
有三題，還請教大大們指點，謝謝
1.On a turntable, a record of radius 5 inches is rotating at the rate of 45
revolutions per minute.
The mumber of inches traveled The mumber of inches traveled per minute by a
per minute by a point on the record 5 inces from the center of the record.
circumstance of the record.
Ans: A
2.Circles R,S, and T are in the same plane, have a common center, and have
radii r, s, and r+s, respectively, where 0 < r < s.
The area of the region whose πs^2
boundary consists of circles
R and T
Ans: A
3.The sum of the lengths of two sides of isosceles triangle K is 7. K has a
side of length 4
The perimeter of K 11
Ans: D
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且撇開了這些特殊份子，大部份人的一生，皆在胡糊塗塗、漫無目標中混過。
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