form 3 maths

👨🏻‍🏫 學術台數學

yan

2009-01-04 12:45 am

唔識8,11,12呢三題.THX:}

8. If the volume of a soap bubble decreases by 27.1%, find the percentage decrease in
(a) radius
(b)surface area

11,12-->http://hk.geocities.com/ew1368/math.JPG

回答 (1)

老爺子

2009-01-04 4:04 am

✔ 最佳答案

The answer is as follows:

圖片參考：http://i320.photobucket.com/albums/nn347/old-master/090103_mat_3a.jpg?t=1230984208

圖片參考：http://i320.photobucket.com/albums/nn347/old-master/090103_mat_3b.jpg?t=1230984237

圖片參考：http://i320.photobucket.com/albums/nn347/old-master/090103_mat_3c.jpg?t=1230984260

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