Question

find the avea of surface obtained by rotating 2<x<6 about the x-axis? tex 35x-2

Answer 1

Given equation of the cove is fla)= 3/8-2 The area of the swiface obtained by rotating the given curve about the a-anis is given by SA 27 Sla) 1/2+1441) 32 da SA Jarinen festen Yencore 27 (3/a-2)/1+13 (217.) Torves da 2 1 + 9 418-2) 6T fa-2 / 42-879 418-2). dal Jerita 140+1 da 3 T بي 42+1 da 3T 4 / 4a+l da 4

6 1-3T */ (13+113/ * 2 () (3 ) [ (५/634-733 32 (412)+1) T 25 - (१) 2 - {52)32 - (32)] [ 125 - 27] -- ना ॥ 2 (198) = [५१ a required Swface area.