Can someone me a still don't get this

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet

Find the roots of the equation below. x^2 - 6 + 9 = 0

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.