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by codeduck 2128 days ago
A million square metres is one square kilometre. It could be built but it would be heavy. A circular sail with a radius of just over 600 metres would do it.
1 comments
chasd00 2128 days ago
wouldn't a million square metered be a megametre and not kilometre?
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codeduck 2128 days ago
no. 1000m * 1000m = 1000000m^2 or 1 km^2
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