Correction for the length of a Red Blood Cell
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How long is 25.8490 furlongs?
It's about 700,000,000 times as long as a Red Blood Cell
The length of a Red Blood Cell is about 0.0000000370 furlongs.
(a.k.a. RBCs, a.k.a. haematids, a.k.a. erythrocyte, a.k.a. erythroid cells, a.k.a. red blood corpuscles)
An average Red Blood Cell measures 7.5 µm (micrometers) in diameter. An average human has 20 - 30 trillion red blood cells in their body and each cell completes a circulatory lap in about 20 seconds.