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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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