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  1. If the radius of a circle is increased by 6%, find the percentage increase in its area.
    1. 15%
    2. 12.36%
    3. 8.39%
    4. 17%
Correct Option: B

Given that, a = 6
According to the formula,
Percentage increase in area
= 2a + [a2/100]%
= 2 x 6 + [36/100]%
= (12 + 0.36)%
= 12.36%


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