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hjlf
3 years ago
15

Help me please please!!!!!!!!

Mathematics
1 answer:
vova2212 [387]3 years ago
6 0

Answer:

a

Step-by-step explanation:

The circumference (C) of a circle is calculated as

C = 2πr ( r is the radius ) , then

C = 2π × 20 = 40π

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