option B is the answer of this question
Answer:
Hey there!
The formula for cylinder volume is 
, where r is the radius, h is the height, and 
is a constant, roughly equal to 3.14.
Substituting all of these values into the equation:
Thus, the volume for the cylinder is 804.84 units cubed.
Hope this helps :)
Answer: Choice D
(a-e)/f
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Explanation:
Points D and B are at locations (e,f) and (a,0) respectively.
Find the slope of line DB to get
m = (y2-y1)/(x2-x1)
m = (0-f)/(a-e)
m = -f/(a-e)
This is the slope of line DB. We want the perpendicular slope to this line. So we'll flip the fraction to get -(a-e)/f and then flip the sign from negative to positive. That leads to the final answer (a-e)/f.
Another example would be an original slope of -2/5 has a perpendicular slope of 5/2. Notice how the two slopes -2/5 and 5/2 multiply to -1. This is true of any pair of perpendicular lines where neither line is vertical.
A is the answer have a nice day
