samy4408
- 62
- 9
- Homework Statement
- ...
- Relevant Equations
- ...
Sorry i don't understand English very well , if someone want to explain to me this problem?
Ordinarily I would delete a post like this, as there is no work shown, but today is your lucky day.samy4408 said:Homework Statement:: ...
Relevant Equations:: ...
Sorry i don't understand English very well , if someone want to explain to me this problem?
View attachment 297876
I do know the formula for the surface area of a sphere , the problem is what they are asking for ,Mark44 said:Ordinarily I would delete a post like this, as there is no work shown, but today is your lucky day.
Do you know a formula for the surface area of a sphere whose radius is given?
Can you determine what fraction of a sphere is shown in the picture?
yessamy4408 said:is it 1/8 of the total surface of the sphere ?
No. You also have to add on the new faces from the cut.phinds said:yes
So it is 2*piphinds said:yes
Ah. You are right of course. I missed that they want ALL of the surface area. Still a trivial problem.caz said:No. You have to add on the new faces from the cut.
That's just the surface area of the part of the sphere. The problem is asking for the area of the partial sphere surface, plus the three other sides.samy4408 said:So it is 2*pi
It says a "solid sphere", so this is correct, IMO. If it was just a spherical surface that was cut, it would be different.caz said:No. You also have to add on the new faces from the cut.