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Secondary 1 | Maths
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Secondary 1 chevron_right Maths

Plse help. I need to find the surface area of the solid. Tks

Date Posted: 6 years ago
Views: 611

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MT Moderator
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325 answers (A Helpful Person)
1) Figure can be folded into a box.
2) Area of figure = surface area of figure.
3) Key point in the question is the find the length of the curve part.

*Read the blue workings, then the red ones, then the purple ones.
6 years ago
I don't understand why the length of arc which is pi is equal to side of the rect