Calculate the Moon's diameter, helped by "SalsaJ".
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Calculate the Moon's diameter, helped by "SalsaJ".
Imagine we had two pictures of the Moon. They are different, they were taken on different dates.
You calculate the Moon's diameter with one of the photos. One of your classmates uses the other one. Your solutionsto the Moon's diameter are different!
What could you deduce from this fact?
Do you need a clue?