What is the circumference of the earth?
The circumference of the earth at the equator is 24,901.55 miles (
40,075.16 kilometers).
But, if you measure the earth through the poles the circumference is a bit shorter - 24,859.82 miles (40,008 km). This the earth is a tad wider than it is tall, giving it a slight bulge at the equator. This shape is known as an ellipsoid or more properly, geoid (earth-like).
How many miles of blood vessels are contained in the body?
If they could be laid end to end, the blood vessels would cover a distance of about 60,000 miles (96,500 kilometers).
Sources: Vogel, Steven. Vital Circuits, pp. 15-16; World Book Encyclopedia, vol. 2, p. 424.
피가 몸을 완전히 한바퀴 도는데에는 46초가 걸린다