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Sagot :
Answer:
Ratio of Earth to human ≈ 7,503,529 : 1
Ratio of human to white blood cell ≈ 113,333 : 1
Step-by-step explanation:
To determine which ratio is larger — the size of Earth to a human, or the size of a human to a white blood cell — we can estimate the sizes involved and compare the ratios.
Size of Earth to a Human
According to NASA, the diameter of the Earth is approximately 12,756 km. Therefore:
[tex]\boxed{\begin{array}{l}\textsf{Diameter of Earth $\approx$ 12,756 kilometers = 12,756,000 meters}\\\\\textsf{Average height of a human $\approx$ 1.7 meters}\end{array}}[/tex]
So, the ratio of the diameter of Earth to a human is:
[tex]\textsf{Ratio}=\dfrac{\textsf{Diameter of Earth}}{\textsf{Height of a human}} \\\\\\\textsf{Ratio}= \dfrac{12\:756\:000 \textsf{ m}}{1.7 \textsf{ m}} \\\\\\ \textsf{Ratio}\approx \dfrac{7\:503\:529}{1} \\\\\\ \textsf{Ratio}\approx 7\:503\:529: 1[/tex]
This means that the diameter of the Earth is approximately 7,503,529 times the height of a human.
Size of a Human to a White Blood Cell
According to B10NUMB3R5 at Harvard University, the usual dimensions of a white blood cell on blood smear is 10 µm - 20 µm. Therefore:
[tex]\boxed{\begin{array}{l}\textsf{Average height of a human $\approx$ 1.7 meters} \\\\\textsf{Average diameter of a white blood cell $\approx$ 15 $\sf \mu m$ = 0.000015 meters}\end{array}}[/tex]
So, the ratio of the height of a human to the diameter of a white blood cell is:
[tex]\textsf{Ratio}=\dfrac{\textsf{Height of a human}}{\textsf{Diameter of a white blood cell}} \\\\\\\textsf{Ratio}= \dfrac{1.7 \textsf{ m}}{0.000\:015 \textsf{ m}} \\\\\\ \textsf{Ratio}\approx \dfrac{113\:333}{1} \\\\\\ \textsf{Ratio}\approx 113\:333:1[/tex]
This means that the height of a human is approximately 113,333 times the diameter of a white blood cell.
Conclusion
The ratio of the size of Earth to a human is significantly larger (approximately 66 times larger) than the ratio of a human to a white blood cell.
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