please to solve the following question:
A can filled with soft drink has base radius 3.2cm and height 12cm.
Jacky pourds all its contents into a conical container of height 9 cm.
If the container is just filled up, what is its diameter?
S3 Math
2011-04-03 2:20 am
回答 (1)
2011-04-04 12:40 am
✔ 最佳答案
Let the radius of the container be r cm.
Volume of the soft drink = Volume of the conical container
Pi ( 3.2 cm )^2 ( 12 cm ) = Pi ( r cm )^2 ( 9 cm )
( r/ 3.2 )^2 = 4/3
r/3.2 = 1.1547 ( -1.1547 is rej. )
r = 3.69504 ( to 5 decimal places )
Hence, the diameter of the conical container
= 2r cm
= 7.39 cm ( to 3 sig. fig. )
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Hope I can help you.
參考: Mathematics Teacher Mr. Ip
收錄日期: 2021-04-15 17:25:53
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