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destinee

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**Consider a planet with a period of orbit to be**

__0.241 years__and an average radius of__0.39 astronomical units__. Calculate the period of a planet with an average radius of__1.4 astronomical units__.**If someone can**

__answer and explain__this question to me, I would be very thankful. I know it has something to do with Kepler's 3rd law (T²/R³), but I do not know how to apply it.The teacher counted my answer wrong. See my work below:**P1 = 0.241 years with a radius of 0.39 AU**

P2 = ? years with a radius of 1.4 AU

So set 0.241 over 0.39 equal to X (? years) over 1.4

You get

0.3374=0.39x than divide

x =

P2 = ? years with a radius of 1.4 AU

So set 0.241 over 0.39 equal to X (? years) over 1.4

You get

0.3374=0.39x than divide

x =

__0.865 year orbit__