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primary 6 | Maths | Fractions
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Emily
Emily

primary 6 chevron_right Maths chevron_right Fractions chevron_right Singapore

Help me please

Date Posted: 5 years ago
Views: 299
Eric Nicholas K
Eric Nicholas K
5 years ago
Length of wire used = perimeter of entire shape = sum of lengths of the semicircle turns + that one 20 cm line

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Sin Yee
Sin Yee's answer
443 answers (A Helpful Person)
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Dixon Teo
Dixon Teo
5 years ago
Hello, I think the formula for circumference of a circle is 2πr. So the answer to this might not be right, but the concept of it is there. My answer I got was 271.33cm
Eric Nicholas K
Eric Nicholas K
5 years ago
And I got a different answer 287.03.

Dixon, you probably forgot about the small semicircle in the middle, which leads to your answer 271.
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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
Sorry I am not an artist, pardon my terrible drawing.
Eric Nicholas K
Eric Nicholas K
5 years ago
Answer is 287.03 to 2 decimal places.