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Question

This is Q5 from P6 OnSponge Conquer Problem Sums’ unit 3.4 that’s teaching Cut and Paste method on circles. Don’t quite understand the answer that’s given. No diagram was given, but just answer. 

Would appreciate some help to understand how to cut and paste to make it into a sector with angle 120°.

Thanks!

 

 

Source: Assessment

Answer

Sorry for messy drawing.

Deduce the same equilateral triangle fits inside the arc since radii are 10cm from centre of circle.

Move the pink leaf outside to form a sector of 120°.

1 Reply 1 Like ✔Accepted Answer

Awesome!

0 Replies 0 Likes

Hope this helps.

1 Reply 3 Likes

Excellent !! Thanks!

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