1. The ratio of the curved surface areas of two similar cones is 9:49. Find the ratio of their
(A) base radii (B) heights (C) volumes (D) base circumferences
Maths
2008-08-13 7:13 pm
回答 (1)
2008-08-13 7:48 pm
✔ 最佳答案
do you remember (line ratio)^2 = area ratio ? and the (line ratio)^3 = volume ratio ?
so , line ratio of two similar cones is 3 : 7~
thus , (A) base radii & (B) height & (D) base circumferences
both are 3 : 7
(C) volumes
are 27 : 343
參考: me
收錄日期: 2021-04-24 08:27:18
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