Find the derivative of sinh(x+1) + tanh(x) + sech(x/2).
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What is the lateral surface area of a right circular cylinder with a height of 8 cm and a radius of 3 cm?
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Math question: In a right triangle, if the length of one leg is 5 units and the length of the other leg is 12 units, what is the length of the hypotenuse?