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 Forum Index >  Test Paper Related >  Primary 6 Matters
 Henry Park Math Prelims
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By: t0002630h (offline)  Tuesday, September 25 2012 @ 04:01 AM CDT (Read 1127 times)  
t0002630h

Anyone of you know how to do Henry Park P6 Maths 2011 Prelims? Q10. Need it asap. Thanks.

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By: angeliakwok (offline)  Tuesday, September 25 2012 @ 07:45 AM CDT  
angeliakwok

Hi

I assume you are referring to the circle sum?

AB is the sum of the 3 big circle's diameter.

so diameter of 1 big circle is 84/3 = 28

so diameter of 1 small circle is 28/2 = 14

so 6 big circles is 22/7 x 28 x 6 = 528

n 4 small circle is 22/7 x 14 x 4 = 176

528 + 176 = 704cm

(fyi 2 small circles perimeter = 1 big circle perimeter)

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