find the circumference of a circle whose area is equal to the sum of the areas of two circles with radii 7 and 12 cm. give the answer correct to 2 decimal places.
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the circumference of the circle is 606.02 cm
just add the areas
i.e
(3.14*7*7)+(3.14*12*12)
=606.02
just add the areas
i.e
(3.14*7*7)+(3.14*12*12)
=606.02
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