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**Homework Statement**

A 11 kg satellite has a circular orbit with a period of 1.0 h and a radius of 4.9 × 10^6 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on the surface of the planet is 41 m/s^2, what is the radius of the planet?

**The attempt at a solution**

I used the formula:

(4pi^2 Rs^3) / (a T^2) = Rp^2

I'm on my last try.

I got 177000000 and then 935000.

I know the formula is right for sure.

I'm not sure what's going on with my calculations. It's basic algebra, easy stuff, but I'm making some mistake... >.>

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