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Secondary 1 | Maths
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Secondary 1 chevron_right Maths chevron_right Singapore

pls help ty in advanced

Date Posted: 4 years ago
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Christmas MT
Christmas Mt's answer
3790 answers (A Helpful Person)
Remember the formulae for volume of cylinder and volume of a cuboid. For the second part, know the formulae to calculate surface area of cylinder. In this case, we know that the cylinder sides are the additional area needed to be painted.
Woon Kiat
Woon Kiat
4 years ago
Is there a careless mistake? I noted that the cuboid has different dimensions for its faces. So I believe there's a mistake for the part whereby you multiply 4(16)(24) for the 4 faces? Shouldn't it be 2(15)(24) + 2(16)(24)? Thanks