What is the surface area of a rectangle prism with the width of 15 length of 10 and height of 8

700  

Step-by-step explanation:

Top + Bottom = 2(15 × 10) = 2 × 150 = 300

Front + Back = 2(15 ×   8) = 2 × 120 = 240

     Two ends = 2(10 ×   8) = 2 ×  80 =  160

                                    Surface area = 700

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)