What is the exact volume of a cylinder whose radius is 21 centimeters and whose height is 30 centimeters?

answer in terms of pie

What is 1/6 divided by 2

shirley had $50. When she bought 3 CDs and 1 calendar at $6, the change was $8. What is the price of 1 CD?

Sloan has 6 gallons of milk. He uses 2/3 of it to make hot chocolate. Then he uses 1/2 of the milk he has left to male cookies. How many gallons of milk does he have left after making hot chocolate and cookies

Put these numbers in descending order 0.516, 0.615, 0.609, 0.506

A science experiment calls for a mixture of 400 mL of liquid A, 2.5 L of liquid B, 650 mL of liquid C, and 1 L of liquid D. Which of the following is the smallest size beaker you could use for this experiment? 4L 6L 5L 7L

Describe how to decide 64 is a prime number or composite number

What is the perimeter of a rectangle with a. Length of 13 feet and a width of 9 feet

What is 4,278,649 rounded to the nearest 100

What are all the common factors of 24, 64, and 88?

3 hours and 45 minutes as a fraction