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Whitepunk [10]
3 years ago
8

Help!

Mathematics
1 answer:
ozzi3 years ago
3 0

Answer:

C.π

Step-by-step explanation:

The formula for circumference is given by

C = pi * diameter

C = pi *d

Divide  each side by d

C/d = pi*d/d

C/d = pi

The constant of proportionality is pi

They are directly proportional

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