Help pls i need to turn this in trmr, thanks.

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

Miranda is braiding her hair.then she will attach beads to the braid.she wants 1_3 of the beads to be red.if the greatest number of beads that will fit on the braid is 12,what other fractions could represent the part of the beads that are red?

What is the value of x in the equation 2(x-4) = 4(2x + 1)?