[解題]國中數學請益
1.年級:二年級
2.科目:數學
3.章節:
4.題目:半徑為20,高為12公分的圓柱容器內加注3公分的高的水後,將此容器封閉栓
緊並直立放置(弧面接觸桌面),假設水不外漏並呈水平面後,在圓面積形成
一割線,求割線與劣弧所形成的面積為何?
5.想法:算體積20*20*pi*3後,就不知如何解了,請求高手協助,答案為40pi
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