Changes to Scratchpad between r13 and r80
'''How Big Is Mars?'''
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Mars, with a diameter of about 6800 kilometers., is a little more than half the size of Earth. If Earth was the size of a cricket ball, Mars would be about the size of a golf ball.
-- http://www.lessonplanspage.com/more/205mar.html
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The Moon's diameter is 3,474 km.
-- http://en.wikipedia.org/wiki/Moon
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The average diameter of the reference spheroid [of the earth] is about 12,742 km.
-- http://en.wikipedia.org/wiki/Earth
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Difference between Mars and Moon: 3326km
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Difference between Mars and Earth: 5942km
If you have to pay someone `''X''%` of principal `''Y''`, the total amount needed to pay is `''Total'' = ''Y'' / (1 - (''X'' / 100))`
Only in r13
Only in r80 --> Modified slightly between r13 and r80