What the surface area of a sphere with a radius of 9

With alll of except for the 2 that i did already

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent.the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244

Mr. lash has 42 pounds of dog food to divide among his dogs. if each dog receives 7/8 pounds of food for each feeding, how many times can mr. lash feed his animals?