l 45thnonagonalnumber
Enter nonagonal statement

Calculate nonagonal number 45

Nonagonal numbers form equally spaced points.

The points form a nonagon.

Nonagonal Number Formula

Nn  =  n(7n - 5)
  2

Plug in n = 45

N45  =  45(7(45) - 5)
  2

N45  =  45(315 - 5)
  2

N45  =  45(310)
  2

N45  =  13950
  2


N45 = 6,975