Answered

Some round crackers are stacked on top of each other. Each round cracker has a height of 0.2 inches and a diameter of 2 inches. The volume of the stack of crackers is approximately 5 cubic inches. Enter the number of crackers that are in the stack.



Answer :

sqdancefan

Answer:

  8 crackers

Step-by-step explanation:

You want to know the number of 2-inch round crackers 0.2 inches high required to make a volume of 5 cubic inches.

Volume

The volume of one cracker is ...

  V = πr²h . . . . . where r is half the diameter

  V = π(1²)(.2) ≈ 0.6283 . . . . cubic inches

Crackers

If n is the number of crackers, their volume will be ...

  0.6283n = 5

  n = 5/0.6283 ≈ 8

There are 8 crackers in the stack.