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= 2πr2 + πd x height (= area of the 2 circle at either end + area of rectangular surface around the cylinder)
Let's first consider the differential of 2x. We know that this becomes ln(2)*2x. We can compare this to the integrand and see that this is very clos...
y = -16x2 + 160x - 256
x = 5
y = 144
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