The radius of a circle is increased by 40%, then area increased by?

95% 96% 94% 90%

96%

Using the formula for net effect = x% + x% + \(\frac{x\;× \;x}{100}\) % ⇒ Net Effect = 40% + 40% + \(\frac{40\;×\;40}{100}\)% = 96%