Answer:
The mean grade was a 17
Step-by-step explanation:
So all you want to do is muiltiply the base times the height
like this (11 X 38.28)
and this is equal to 421.08 ft
i hope this helps!!
1 ft= 12 in
(34*12)= 408 in
so 34 ft= 408 in
A D E are the answers because the second A is the opposite and an undefined slope is a vertical line not a zero like a flat one.