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junior college 1 | H2 Maths
3 Answers Below
Anyone can contribute an answer, even non-tutors.
Pls help need it asap
Date Posted: 4 years ago
Views: 297
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Kindly verify the workings eh, thanks.
Date Posted:
4 years ago
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Find area
Find volume
Area is base + side
Material is area x thickness
Side is found by cutting the cylinder and becomes a rectangle with width as 2PI()R
Form equation don’t put in number
V = base area x height
Mat = thickness x Area
Area is as indicated
Then differentiate mat against R
Then differentiate mat again against R to show it is minimum as always > 0
Find volume
Area is base + side
Material is area x thickness
Side is found by cutting the cylinder and becomes a rectangle with width as 2PI()R
Form equation don’t put in number
V = base area x height
Mat = thickness x Area
Area is as indicated
Then differentiate mat against R
Then differentiate mat again against R to show it is minimum as always > 0
Date Posted:
4 years ago
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
During the journey you will find that thickness is redundant
Find R expressed in V as constant
Find H expressed in V as constant
Both happen to be the same
Then put V=1000, R and H is the answer
Find R expressed in V as constant
Find H expressed in V as constant
Both happen to be the same
Then put V=1000, R and H is the answer
Date Posted:
4 years ago
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