Answer:
12.57cm
Explanation:
C=πd, where C is the circumference and D is the diameter.
Simply put the diameter into (d) and times it by 3.14, or by π directly if the question specifies "give your answer in terms of π".
The way scientists know that a hypothesis in astronomy is a reasonable description of nature is to do experiments and observations about the prediction of the hypothesis.
Given an incomplete sentence related to hypothesis and astronomy.
We are required to complete the sentence.
A hypothesis is basically a testable statement about the relationship between two or more variables or a proposed explanation for some observed phenomenon.
Astronomy is basically the study of everything in the universe beyond Earth's atmosphere.
The statement can be completed by "do experiments and observations about the prediction of the hypothesis".
Hence the way scientists know that a hypothesis in astronomy is a reasonable description of nature is to do experiments and observations about the prediction of the hypothesis.
Learn more about hypothesis at brainly.com/question/11555274
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Speed = distance/time
20 miles divided by 4 hours = 5 mph
ANSWER : 5mph
The answer to this question is prediction
