I Re-derive the surface area of a sphere

naomineu
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Hey everyone,
I've been stuck on this one piece of HW for days and was hoping someone could help me.
It reads:
The surface area, A, of a sphere with radius R is given by
A=4πR^2
Re-derive this formula and write down the 3 essential steps. This formula is usually derived from a double integral over the polar angle φ and the azimuthal angle θ. Find it on the internet or look it up elsewhere.

I have been searching and a vast majority of the explanations use the geometry to figure it out and I can't find ANY that have an explanation using the polar angle and azimuthal angle.
Can anyone please help?

THANK YOU
 
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naomineu said:
Hey everyone,
I've been stuck on this one piece of HW for days and was hoping someone could help me.
It reads:
The surface area, A, of a sphere with radius R is given by
A=4πR^2
Re-derive this formula and write down the 3 essential steps. This formula is usually derived from a double integral over the polar angle φ and the azimuthal angle θ. Find it on the internet or look it up elsewhere.

I have been searching and a vast majority of the explanations use the geometry to figure it out and I can't find ANY that have an explanation using the polar angle and azimuthal angle.
Can anyone please help?

THANK YOU
Have you looked at the Wikipedia page and the links there?
 
fresh_42 said:
Have you looked at the Wikipedia page and the links there?
I have, but none of the explanations use the polar angle and the azimuthal angle.
 
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