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Area of a circle with diameter ‘m’ radius ‘n’ and circumference ‘p’ is:

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2 πn

m 2

π p 2

π n 2

answer is D.

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Detailed Solution

Given, a circle with diameter ‘m’ radius ‘n’ and circumference ‘p’.
We know that the area of a circle with ‘r’ radius is

π

times the square of its radius i.e.,

π r 2

.
Now, as per the question, the radius of the circle is given as n, so by the formula for the area, we have r = n. Then the area of the circle will be

= π n 2

.
Hence, the correct option is (4).

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