Correction for the size of a Playing Card
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How big is 758.610 square kilometers?
It's about 150,000,000,000 times as big as a Playing Card
The size of a Playing Card is about 0.00000000560 square kilometers.
(ISO 216 B8 size)
A single ISO 216 B8-size playing card measures 0.00000000560 square kilometers. Although this size is the most common playing card, many casinos use the smaller "bridge size" card — 0.00000000260 square kilometers smaller.