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The radius of a circle is increased by 25%, then area increased by? |
56.4% 50.25% 56.25% 46.25% |
56.25% |
Using the formula for net effect = x% + x% + \(\frac{x\;× \;x}{100}\) % ⇒ Net Effect = 25% + 25% + \(\frac{25\;×\;25}{100}\)% = 56.25% |
