PLS HELP 15 POINTS

Franco wants to double the volume of the cone. what should he do?

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?

Solve the inequaliy: (x^2+2)(x−2)^2(6−2x)> 0