four cylindrical barrels each have a capacity of 100L but have different diameters and height. determine the height of the barrel for each diamter.. a) 40.0cm. b) 45.0 cm. c) 50.0cm. d)55.0cm​

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

If you answer 2+2 you will get over 80 points

Kendra had twice as much money as kareem. kendra later spent $8 and kareem earned $6. by then,the two had the same amount of money. how much money did each have originally?