Is 30 square centimeters as big as a US Nickel?
It's about eight-and-a-half times as big as a US Nickel
The size of a US Nickel is about 3.5330 square centimeters.
(United States five-cent coin) (a.k.a. Jefferson nickel)
The nickel, in its current design since 1938, has a diameter of 21.21 mm (0.835 in) and an area of 3.5330 square centimeters.
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