Angle/Area problem

[12345786332]

The fourth part of the question (d), I can't find the value for the angle. Tried everything.

 

[Deleted member 4993]

The fourth part of the question (d), I can't find the value for the angle. Tried everything.



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Please show us what you have tried and exactly where you are stuck.

Please follow the rules of posting in this forum, as enunciated at:

https://www.freemathhelp.com/forum/threads/read-before-posting.109846/#post-486520

Please share your work/thoughts about this problem.

 

[11199264]

would use angle formula α = 2 * arcsin( r / s ) where s is the slope s = √(h² + r²) ... r is radius

 

[Dr.Peterson]

The fourth part of the question (d), I can't find the value for the angle. Tried everything.



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I doubt that you've literally tried everything; it would be helpful to see some specifics.

I'd find the radius and arc length of the sector, and use those. The arc length is the entire circumference of the cylinder.