Correction for the size of a US Quarter
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How big is 0.50 square meters?
It's about 1,000 times as big as a US Quarter
The size of a US Quarter is about 0.0004622 square meters.
(United States quarter-dollar coin) (a.k.a. Quarter dollar, a.k.a. Washington quarter, a.k.a. two bits)
The George Washington quarter, in circulation in various forms since 1932, has a diameter of 24.26 mm (0.955 in) and an area of 0.0004622 square meters.