Question

distance of two planets from sun are 10^11m and 10^10m respectively .what is the ratio of time petiod of these two planets??

Answer 1

according to keplars law
t1²÷t2²≈r1³÷r2³
then 
10power 11 ÷10power10whole cube =1000
t1²÷t2²=1000÷1
t1÷t2=√1000÷√1=31.6is to 1

Answer 2

Explanation:

ANSWER IS ATTACHED.

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