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Mathematics, 28.01.2020 22:55 christopher766

The inner ring of a hula hoop has a radius of 18 inches. which expression can be used to find its circumference, c, in inches?

a c = 18 × π

b c = (18)2 × π

c c = 2 × 18 × π

d c = 2 × (18)2 × π

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