For the circumference, you actually multiply by 20 because of the formula πd = C [OR 2πr = C]. You meant to double the radius.
Answer:
5x-4
Step-by-step explanation:
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Answer:
1st cylinder: 3541.9 square mm
2nd cylinder: 439.6 square cm
Step-by-step explanation:

Second cylinder.

Answer:
57/2
Step-by-step explanation:
USE MATH PAPA IT WORKS
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