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當圓柱側面是正方形時,那麼圓柱的高等於圓柱的底面周長,在知道圓柱的高的前提下,圓柱底面積S=h^2/3.14/4,在知道圓柱側面積的情情况下,S底=S側/3.14/4.
圓柱的底面就是圓 你說怎麼算圓的面積
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