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Saturday, June 24 2017 @ 12:14 PM CDT
 Forum Index >  Test Paper Related >  Primary 6 Matters
 P6 Math Area & Perimeter
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By: acelow (offline)  Sunday, September 22 2013 @ 08:05 AM CDT (Read 714 times)  
acelow

Kindly please help in the two attachment.

Thank you very much.. Wink

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By: echeewh (offline)  Sunday, September 22 2013 @ 10:49 PM CDT  
echeewh

Hey <acelow>

Appreciate that you indicate the <Answerkey> next time, whenever possible. Thank you.

Following is my worked solution:

Let perpendicular height of triangle OPS be h cm

Area of triangle OPS
= (1/2) × 12u × h
= 6u × h

Given that area of triangle OPS is 60 cm2, we have ...

6u × h = 60
h = 60 ÷ 6u = (10/u)

Area of triangle ORS
= (1/2) × 5u × (10/u)
= 25 cm2

========

Trust this helps.

Do let me know again if there's further clarification.

Cheers,
Edward

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By: echeewh (offline)  Monday, September 23 2013 @ 01:21 AM CDT  
echeewh

Hey <acelow>

For my worked solution to your Q2 (Overlapping Circles), please see attached.

Trust this helps.

Do let me know again if there's further clarification.

Cheers and all the best in your PSLE,
Edward

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By: acelow (offline)  Monday, September 23 2013 @ 07:47 AM CDT  
acelow

Many thanks for the solution.

I have noted that in the Power Revision 3, Question 28 is asking for the smallest perimeter but in the answer key, its given as C. and in Question 26, which is the triangle question, the answer is 12cm2 but your answer and mine is 25cm2.

Thank you

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