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標題:
what is the ratio PN:PM?
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發問:
in the figure ,the volumes of right circular cone PQR and frustum QSTR are 81cm^3 and 111 cm ^3 respectively. what is the ratio PN:PM? http://hk.geocities.com/leemingki21/3M.bmp (圖)
最佳解答:
睇相*V* http://www.smallcampus.net/member_files/aa/bz/m268171/html/RIMG0366.JPG
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