Correction for the size of a US Dime
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How big is 1.70 hectares?
It's about 65,000,000 times as big as a US Dime
The size of a US Dime is about 0.000000025190 hectares.
(United States ten-cent coin) (a.k.a. Roosevelt dime)
The dime, in its current design since 1946, has a diameter of 17.91 mm (0.705 in) and an area of 0.000000025190 hectares.