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secondary 2 | Maths
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secondary 2 chevron_right Maths

Please try to help me work out (b). Answer sheet is 100cm3.

Date Posted: 7 years ago
Views: 353
Ediwin Wong
Ediwin Wong
7 years ago
I spotted your mistake. You use the slant height rather than the vertical height. Ot should be

Volume of toy=1/3PI(2.8)^2(squrt44)+2/3PI(2.8)^3
=100cm^3 (3s.f.)

Btw I am a sec 1 :)

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Cindy Neo
Cindy Neo's answer
169 answers (A Helpful Person)
1st
Use the vertical height of the cone instead of the slanted height.
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7 years ago
Thanks so much for spotting my mistake! I didn’t notice I was using slant height!