Answer:
The answer is 3.
Explanation:
Factors of 18:
1, 2, 3, 6, 9, 18.
Factors of 21:
1, 3, 7.
The highest number that both sets contain is 3, so the GCF will be 3.
Circumference=24 pi
Area=144 pi, shown clearly in photo
Answer:
7 = 7 * 10 = 70
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