A small pyramid has 3 stones at the top and 2 more stones in each layer below this. If the pyramid has 19 layers, how many stones are in the pyramid?

add 5 subtract 1

step-by-step explanation:

step-by-step explanation:

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sure i'm up for it

step-by-step explanation:

step-by-step explanation:

given that ab is divided into equal parts as

ac, cd, de, ef, fg, gh, hi, ib.

from this we find that f is the midpoint of ab.

so using mid point formula we find

f = (3,7)

similarly considering fb, we get

h = mid point of fb = ((6,6) and g, mid point of fh is

g = (9/2, 13/2)

i is mid point of hb

so i =(15/2,11/2)