6 inches 9 inches 6 inches 9 inches 9 inches 6 inches 12 inches 9 inches 6 inches 9 inches 6 inches 9 inches 6 inches. what is the surface area?

you probably already have the answer but anyways it's b. 15.0

step-by-step explanation:

3

step-by-step explanation:

i don't know, but that looks pretty bad. my school passed us unless we failed in all the subjects, but idk abt ur school's rules.

copyright potato 2019.

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