Attached you will find a file with the answers to the four questions provided.
Answer:
common knowledge
Explanation:
it's common knowledge because there's no words from the fr the speech, there no quotation and there's nothing about the speech, so it's not direct quotation, plagiarism or summary, so the most obvious is common knowledge
Formula of circle:
C= 2πr
The radius is half of the diameter, so divide 9 by 2
18/2=9
Then plug in 9 as the radius in the formula.
C= 2π(9)
Using you calculator multiply 2 by the symbol "π" and 9
Exact Form is 18π
Decimal Form is 56.54866776...
