

diameter  vs Earth  

Earth  10^{7} × 1.27 m  1 x  
Jupiter  10^{8} × 1.43 m  10 x  (closer to 11) 
Sun  10^{9} × 1.39 m  100 x  (closer to 110) 
length,  area,  volume 
m^{1}  m^{2}  m^{3} 
diameter  vs Earth  

Earth  10^{7} × 1.27 m  1 x  10^{0} 
Jupiter  10^{8} × 1.43 m  10 x  10^{1} (closer to 11) 
Sun  10^{9} × 1.39 m  100 x  10^{2} (closer to 110) 
surface area  vs Earth  

Earth  10^{15} × 0.510 m^{2}  1 x  10^{0} 
Jupiter  10^{17} × 0.641 m^{2}  100 x  10^{2} (closer to 130) 
Sun  10^{19} × 0.609 m^{2}  10,000 x  10^{4} (closer to 12,000) 
volume  vs Earth  

Earth  10^{21} × 1.1 m^{3}  1 x  10^{0} 
Jupiter  10^{25} × 1.52 m^{3}  1,000 x  10^{3} (closer to 1,400) 
Sun  10^{27} × 1.41 m^{3}  1,000,000 x  10^{6} (closer to 1,300,000) 
diameter  area  volume  

Earth  10^{7} × 1.27 m  10^{15} × 0.510 m^{2}  10^{21} × 1.1 m^{3} 
Jupiter  10^{8} × 1.43 m  10^{17} × 0.641 m^{2}  10^{24} × 1.52 m^{3} 
Sun  10^{9} × 1.39 m  10^{19} × 0.609 m^{2}  10^{27} × 1.41 m^{3} 
1 : 10^{1} : 10^{2} m 
1 : 10^{2} : 10^{4} m^{2} 
1 : 10^{3} : 10^{6} m^{3} 
density  volume  mass  

Earth  10^{3} × 5.5 kg/m^{3} (5.5 g/cm^{3})  10^{21} × 1.1 m^{3}  10^{25} × 0.60 kg  10^{0} 
Jupiter  10^{3} × 1.3 kg/m^{3} (1.3 g/cm^{3})  10^{24} × 1.52 m^{3}  10^{27} × 1.9 kg  10^{3} 
Sun  10^{3} × 1.4 kg/m^{3} (1.4 g/cm^{3})  10^{27} × 1.41 m^{3}  10^{30} × 2.0 kg  10^{6} 
Then its area is 10^{7} × 10^{7} × 6 (sides) m^{2}.
And its volume is 10^{7} × 10^{7} × 10^{7} m^{3}.
length m^{1} 
area m^{2} 
volume m^{3} 


Cube 




Earth 




a 10^{7} m cube  

a 10^{7} m sphere, roughed as 1/2 of the cube  

10^{7} × 1.2 m sphere ("six ee six" radius), using 1/2 of cube  

10^{7} × 1.27 m sphere, using 4 pi r^{2}  

Earth's area [Cow p235] 
Earth radius  "Six ee Six meters" (6 × 10^{6} m, aka 6E6, 6%, ±<1% )
Earth diameter  
"Two times Six ee Six meters" (1.2 × 10^{7} m, aka 12E6, 6%, ±<1% ) 10^{7} (×0.22, ±<1%) 
10^{7} × 1.276  1.272 m  ±<1%  from equatorial  polar radius [Cow] 
10^{7} × 1.3 m  +2%, ±<1%  
10^{7} × 1.2 m  6%, ±<1%  2 × 6E6, "twelve ee six meters" 
10^{7} × 1.4 m  +10%, ±<1%  7E7 
10^{7} m  22%, ±<1% 
Remembering the size of Earth, and the 1 : 10 : 100 size relation, you then know the size of Jupiter and the Sun, too. And area and volume. And rough mass if you remember a rough density.
Some links
Doing Geometry with Jupiter
Doing Geometry with Saturn
The Sun and Earth Size Comparison
A Solar System Scale Model Meta Page
Comments encouraged.  Mitchell N Charity <mcharity@lcs.mit.edu> 
Doables: Too much is only implicit. Needs a few worked examples. Like earth landmark (6E6 m) to earth area to solar area, perhaps then power release, transmission to earth. Perhaps return a few of the landmarks? Mention invariance of diameter vs radius. Mention sun size vs earthmoon. Give sources for numbers. Earthonly blocks perhaps belong elsewhere. Now always saying 1:10:100. Should explicitly point out this means S = 10 x J. Add link to Scaling the universe to your desktop's Megameters in your hands.
History: 2003Feb03 Fixed 1 link. 2000Oct10 Spelling correction "equitorial"  thanks to a reader. Added link to `Megameters in your hands'. 1999.Dec.14 Added `20x25 Mm' link. 1998.May.21 Added `Doing Geometry with Jupiter/Saturn' links. 1997.Aug.10 First draft. Removed landmarks. 1997.Aug.06 First pass.