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jesh0975556
14.12.2019 •
Mathematics
Suppose astronomers built a 50-meter telescope. how much greater would its light-collecting area be than that of the 10-meter keck telescope?
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Ответ:
Its light-collecting area would be 25 times greater than that of the 10-meter keck telescope.
Step-by-step explanation:
1. To solve this problem you must apply the formula for calculate the area of a circle, which is shown below:
Where r is the radius of the circle.
2. The diameter of a circle is:
Where r is the radius of the circle.
3. Therefore, keeping this on mind, you have that the light-collecting area of a 50-meter keck telescope is:
4. And the light-collecting area of a 10-meter keck telescope is:
5. Divide
by
, then:
6. Therefore, its light-collecting area would be 25 times greater than that of the 10-meter keck telescope.
Ответ:
4
Step-by-step explanation:
7+sqrt(7) is an irrational number