The dvd stack is shown below consists of 100 disks. the diameter of each disk is 120 millimeters, the diameter of the hollow center of the disk is 15 millimeters, and the thickness is 1.2 millimeters. what is the volume of the stack in terms of latex: \pi π ?

The volume of the stack is

Step-by-step explanation:

we know that

The volume of the cylinder (DVD stack) is equal to

where

B is the area of the base

h is the height of the stack

Find the area of the base B

The area of the base B is equal to the area of the larger circle minus the area of the hollow center

we have

-----> the radius is half the diameter

-----> the radius is half the diameter

substitute

Find the height of the stack

Find the volume

- click here to get an answer to your question ✍ 75 i will mark one of the angles formed by two

step-by-step explanation:

an = 22 + (n-1) *6

110 seats

step-by-step explanation:

an=a1+(n-1)(d)

a1 = 22   this is the first item in the sequence

d =6   this is how the sequence goes up

a)   an = 22 + (n-1) *6

b) a12 = 22 + (12-1) *6

    a12 = 22+11*6

  a12 = 22 +88

  a12 = 110