Mathematics, 30.01.2020 09:05, lakinbacon4

Elspeth knows that pi x r = 9.42 cm. what would she need to do to find the circumference?
she could multiply 9.42 by 2.
she could multiply 9.42 by pi.
she could divide 9.42 by 2 to find the radius, then square the radius.
she could divide 9.42 by pi to find the radius, then multiply 9.42 by the radius.

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Elspeth knows that pi x r = 9.42 cm. what would she need to do to find the circumference?
she...