Question

can someone help me please the problems are above i think or below whatever way they show up for people who help me

Answer 1

Answer

a. The volume is multiplied by 4

b. The volume is doubled

Explanation

a. The volume of a cone with radius r and height h is $\pi r^2 h/3$. If the radius is doubled, the new volume will be $\pi (2r)^2h/3$, which is equal to $4\pi r^2h/3$. This means that the volume is multiplied by 4.

b. The volume of a cone with radius r and height h is $\pi r^2 h/3$. If the height is doubled, the new volume will be $\pi r^2(2h)/3$, which is equal to $2\pi r^2 h/3$. This means that the volume is multiplied by 2.