# Calculate the superficial area

a) find the superficial area of ?

b) evaluate the integral ? ? xyzdS.

given S the part of the cone parameretized by

x = r cos(?), y = r sin(?), z = r, 3 ? r ? 5, 0 ? ? ? 2?

a)calculate the superficial area of ?

b) evaluate the integral ? ? xyzdS.

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