[計量] BB TEST21
又是一題數學
麻煩大家了
Circles R, S, T, are in the ame plane have a common center,
and have radii r, s, and r+s, respectively, where 0 < r < s.
14.
The area of the region πs^2
whose boundary consists
of circles R and T
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10/11 17:57, , 1F
10/11 17:57, 1F
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