The planet Mercury has a diameter of 4879.4 kilometers.
Nonsense is the measure of its diameter in mm.
But it is 4879400000 millimeters (4.8794 x 109 mm or about 5 billion mm).
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Mercury's core has a diameter of about 3,600 miles (5,800 kilometers), which is roughly 85% of the planet's total diameter. It is composed mostly of iron and nickel, and is thought to be partially molten.
Mercury is 4,880 km in diameter, and Uranus is 51,152 km in diameter, so 10.2 mercurys equal the diameter of Uranus.
Venus has a diameter of about 12,104 km, whereas the sun has a diameter of about 1,391,000 km. If the sun's diameter is 3000 mm at some scale, then the scale diameter of Venus would be about 12.32 mm.
The diameter of a nickel is 21.21 mm.
0.5709"Direct Conversion Formula14.5mm*1 in25.4 mm=0.5708661417in