Math, asked by gurjeetkaur7778, 1 year ago

7. The diameter of two circular rings are 7 cm and
12 cm. Find the ratio of their circumferences.

Answers

Answered by dhanpatikosli

1

Step-by-step explanation:

(2π(7/2)^2)/(2π(12/2)^2)

=(49/2)/36

=49:72

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