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Hello, Im a newguy here, so if my question dont belong to this section, please let me know.

My question:

In spherical symmetric spacetime discrabed by Schwarzschild coordinate ds^{2}=-a(r)dt^{2}+b(r)dr^{2}+r^{2}(dΘ^{2}+Sin^{2}(Θ)d[itex]\varphi[/itex]^{2}), "r" is defined as r=[itex]\sqrt{A/(4\pi)}[/itex] where "A" is an area of sphere dΘ^{2}+Sin^{2}(Θ)d[itex]\varphi[/itex]^{2}. What is relation between "r" and real distance from the center of coordinate?

Thank you all.

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# Schwarzschild coordinate r

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