Boy Mow Chau's answer to genevieve's Secondary 4 A Maths Singapore question.
… open cylinder means got base but got no top.
… need not to work out material in base and material in side wall separately.
instead, just consider as …
vol. of material = external vol. - internal vol.
… need not to work out material in base and material in side wall separately.
instead, just consider as …
vol. of material = external vol. - internal vol.
Thanks!!!
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