If an average cow is 5' at the shoulder and weighs 1500 pounds, then your 200' cow would weigh 60,000 pounds and produce 400 tons of manure a year. Google isn't helping me figure the size of the average patty though.
I question your math.
A 200' tall cow would be bigger than a 5' cow by a factor of 40.
Now, if you make a object larger you increase its mass by a cube of the difference factor, which would be:
40 x 40 x 40 = 64,000.
Now, assuming your 5' cow weighed 1500 pounds as you suggest.
64,000 x 1500 = 96,000,000 lbs.
Now that works out to 48,000 tons.
I ain't touchin' the part on manure!
TommyGunn.
Who learned all he needed to know about this from
LAND OF THE GIANTS.