If percent increase in radius of cylinder is 300. Then volume of the cylinder changes by how much per cent?

Correct answer: 1500%

Explanation: ✅ Correct Answer: A) 1500% 📚 Explanation: Volume of a cylinder is $V = \pi r^{2}h$ If the radius increases by 300%, the new radius $r^1 = 4r$ Assuming height is constant, $V^1 = \pi {\left(4r\right)}^{2}h = 16\pi r^{2}h$> The increase is $16V - 1V = 15V$ In percentage, this is 15 x 100 = 1500%