Question

kendall and manix has 14 x 5 picture then they buy 13 x 8 picture what is both of the pictures leanth width and hight

Answer 1

Here's a video detailing the steps to finding length and height:
m.youtube.com/watch?v=ub82Xb1C8os

Answer 2

a picture has only two dimensions, generally called
width and height
or length and width

Why do you specify three dimensions?