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syed514
Jupiter is around 1/10 of the sun and 1.02m is around 1/10 of 10m. 
I think your issue is that most pocket adding machines can't deal with 10 figure numbers like 0.0000000072 
Earth is around 1/100 of the sun so expect around 0.1m 
Trap have a go at doing the total in km not meters so duplicate by 0.0000072 then change over in your mind by expelling 3 naughts ot zeros or simply drop the kilo from kilometer and there you are 
EX Earth is 12756 km X 0,0000072 = 0.0918 km partition by 1000 = 0.0918 m 
Check earth is around 1/100 sun measurements so anticipate that the answer will be around 0.1 meters or 10 cm so that works. 
to entirety up just 5 zeros after the decimal point and you have it.
Diameters in meters:

Sun 1,391,000,000 m 
Mercury 4,879,000 m 
Venus 12,104,000 m  
Earth 12,756,000 m  
Mars 6,794,000 m  
Jupiter 142,984,000 m  
Saturn 120,526,000 m  
Uranus 51,118,000 m 
Neptune 49,528,000 m 

Ratio: [tex] \frac{10}{1,391,000,000} =7.2\times 10^{-9}[/tex]
Multiply each planet by [tex]7.2\times 10^{-9}[/tex] to get the diameter in meters.

Mercury 4,879,000 m × [tex]7.2\times 10^{-9}[/tex] = 0.035704 m = 37.7 mm
and so on...


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