One link in a chain was made from a cylinder that has a radius of 2 cm and a height of 20 cm. how much plastic coating would be needed to coat the surface of the chain link? use 3.14 for π.
a.251.2cm2
b.314 cm2
c.345.4 cm2
d.471 cm2

Eileen purchased 3.4 pounds of apples at the total cost of $19.72. if she purchases 6.2 pounds of apples at this store, how much would it cost?

Solve: 3x+y=6 4x-2y=18 show all work !

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.