Question

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(1) The ratio of circumference and area of a circle is 2:7. Find its circumference​

Answer 1

Answer:22units

Step-by-step explanation:

Circumference =2*22/7*r

Area=2*22/7*(r)^2

So,2*22/7*r:2*22/7*(r)^2=2:7

r:(r)^2=2:7

1/r=2/7

r=7/2

So,circumference =2*22/7*7/2=22units