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CUET
General Test
Quantitative Reasoning
Mensuration: 2D
The radius of a circle is increased by 12%, then area increased by?
27.44%
25.4%
24.44%
25.44%
Using the formula for net effect = x% + x% + \(\frac{x\;× \;x}{100}\) %
⇒ Net Effect = 12% + 12% + \(\frac{12\;×\;12}{100}\)% = 25.44%