An engineering class is designing model rockets for a competition. The body of the rocket must be cylindrical with a cone-shaped top The cylinder part must be 40 cm tall, and the height of the cone must be twice the radius.
The volume of the payload region must be 1584 cm in order to hold the cargo
a) Find the radius of the rocket. cm
b) Find the height of the cone

Use the frequency distribution, which shows the number of american voters (in millions) according to age, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. ages frequency 18 to 20 5.9 21 to 24 7.7 25 to 34 20.4 35 to 44 25.1 45 to 64 54.4 65 and over 27.7 the probability that a voter chosen at random is in the 18 to 20 years old age range is nothing. (round to three decimal places as needed.)

Sammie has 3 times as many goldfish as nora. nora has 4 goldfish. how many goldfish do sammie and nora have in all?

Write each rational number in the form a/b, where a and b are integers. 1. 5 1/6 2. -12