Answer:
The distance between the top of the well and the bottom of the well was 12 1/2
Step-by-step explanation:
(a.k.a B) i did it and got it right :)
<D because if you look at the angle it is <D
10^2+8^2-7^2/(2*10*8)
= 115/160 = 0.71875 round off to 0.72
He recognizes that the answer is whatever you can multiply by the second number in the division problem
