Question

Integration question - find volume round y-axis of shaded region

Answer 1

first question ?

Answer 2

yep

Answer 3

\[\int\limits_{1}^{5}\pi(y-1)^{1/2}*^2dx\]

Answer 4

looks good,
it shoudl be `dy`

Answer 5

\[\large \int\limits_{1}^{5}\pi(y-1)~dy\]

Answer 6

oh sorry yes dy

Answer 7

yes thats right, just evaluate the integral..

Answer 8

thanks :) now for question we find side AB using pythageorn theorm

Answer 9

then use sine rule

Answer 10

@ganeshie8 i know i am asking too much but is there any clue to 2ii) in the attatchment.

Answer 11

i proved the angle