• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Maths P1 Nov 2005 Q5(i)

PlanetMaster

XPRS Administrator
Messages
1,177
Reaction score
2,105
Points
273
First see the image in 2-Dimension just as it is in question.
Using similar triangles:
..r.....=...6.
12-h......12
So h =12−2r

Now come to 3-Dimension.
Vol of cylinder = πr²h
Vol of cylinder = πr²(12-2r)
Vol of cylinder = 12πr² - 2πr³ (Shown)
 
Top