The circumstance of a circle is represented by 2 pie r. If the radius of the circle is double, then the circumference is
1 answer:
The circumference of the circle is given by C = 2 π r
If the radius of the circle is doubled, then new radius will be r' = 2r.
And new circumference will be C' = 2·π·(2r) = 2·(2 π r) = 2·C
It is clearly visible that new circumference is twice the original circumference i.e. C' = 4 π r
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just multiply 12 times 4. thats 48. so 48 divided by 4 is 12
