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[20 分]數學問題一條
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Since cone of x is similar to cone of (x+y) curved surface area of x : curved surface area of (x+y) = 3^2 : (3+4)^2 = 9 : 49 so, curved surface area of x : curved surface area of y = 9 : (49-9) = 9 : 40
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[20 分]數學問題一條
發問:
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http://aycu28.webshots.com/image/50467/2003958494274221610_rs.jpg最佳解答:
Since cone of x is similar to cone of (x+y) curved surface area of x : curved surface area of (x+y) = 3^2 : (3+4)^2 = 9 : 49 so, curved surface area of x : curved surface area of y = 9 : (49-9) = 9 : 40
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