If a cone has a height that equals twice the diameter of its base, what is its volume in terms of the height

Adriano loves anime and collects toys from his favorite series. each month he gains 4 toys. if adriano has 3 toys when he starts collecting, how many does he have after 4 months

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)