Qualification > Math

C1 and C2 DOUBTS HERE!!!!!

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Saladin:

--- Quote from: halosh92 on May 26, 2010, 03:47:12 pm ---hey!
anyone has 2009 june ms !!!!!!!!!!! rili urgent!

--- End quote ---

here

halosh92:

--- Quote from: Engraved on May 26, 2010, 05:11:54 pm ---here

--- End quote ---

THANKU ;)

halosh92:
edexcel 2009 june
Q9a
plzzzz help and explain in details.
anyone? :)

Saladin:

--- Quote from: halosh92 on May 26, 2010, 08:57:34 pm ---edexcel 2009 june
Q9a
plzzzz help and explain in details.
anyone? :)

--- End quote ---

on it now.

Saladin:
We need to find in terms of r.

Therefore, the volume is equal to,





Now you need to find what makes the surface area.

2 sectors + 2 rectangles + curved face

So,




I hope that explains everything.

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