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The radius of a circle is increased by 20%, then area increased by? |
50% 44% 20% remains unchanged |
44% |
Using the formula for net effect = x% + y% + \(\frac{x\;× \;y}{100}\) % ⇒ Net Effect = 20% + 20% + \(\frac{20\;×\;20}{100}\)% = 44% |
