Anton Ego's answer to Marc's Primary 5 Maths Area & Volume Singapore question.
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Date Posted:
4 years ago
You have to subtract two triangles instead of only 1.
The folded part is covering an area equal to itself. So the area of the shaded parts cannot include that covered area.
Yes, mistake
Y
Trying unfolding the paper back. You'll see that the unshaded part is of two triangles.
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