How do i find an average in a group of numbers

Here

Step-by-step explanation:

To find the average in a group of numbers you must take all the numbers add them together and divide them by the number of numbers.

For example:

87, 36 ,45 , 91

Add them together :259

Divide them by the number of numbers: 4

The answer is : 64.75

d 25 pi/6

step-by-step explanation:

the diameter is 10 inches

the radius is 1/2 of the diameter or 5 inches

the area of the circle is

a = pi r^2

  = pi 5^2

  = 25 pi

the slice is 60 degrees of the entire circle.

60 degrees out of 360   60/360 = 1/6

the area of the slice is 1/6 of the circle

a slice = 1/6 a circle

a slice = 1/6 * 25 pi

the answer is d

hope this