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Answer:

Step-by-step explanation:
Diameter (d) = 6 cm
Radius (r) = ?

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Answer:
140
Step-by-step explanation:
The maximum is the furthest the line that goes out the furthest, the minimum would be about 83-84
Answer:
S.A. = 1,017.36
Step-by-step explanation:
S.A. = 
12 x 12 x 3.14 = 452.16
3.14 x 12 x 15 = 565.2
565.2 + 452.16 = 1,017.36