Moon Earth distance measurements

1. EARTH'S RADIUS MEASUREMENT
Eratosthenes method
20. march 2012
City Country School DISTANCE ANGLE CIRC DIAMETER
Alor Akar Malaysia SMK Alor Akar 4745,78 3,091 39430 12551
Fontenay le C France Collège Tiraqueau 46,42

2. MOON'S RADIUS MEASUREMENT
Moon eclipse
15. june 2011
Earth shadow diameter = 13.31
Moon diameter = 4.76
Earthshadowdiameter
Moondiameter
=2,79
Measurements made with Geogebra
Photo : C. Baudouin Astro Club 85
Earthdiameter=3,79Moondiameter
Moondiameter=
Earthdiameter
3,79

3. DISTANCE MEASUREMENT
Moon artificial eclipse by 2 cents coin
Coin Observateur distance = 2280 mm
Coin diameter = 19 mm
Moondiameter
Coindiameter
=
MoonObservateurdistance
CoinObservateurdistance
MoonObservateurdistance
Moondiameter
=
2280
19
Measurements :
MoonObservateurdistance=Moondiameter×120

4. FINAL CALCULATION
MoonObservateurdistance=Moondiameter×120
Moondiameter=
Earthdiameter
3,79
We measured :
Earthdiameter=12551km
So :
MoonObservateurdistance=
12551
3,79
×120
MoonEarthdistance=397393km