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primary 6 | Maths
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Help Avis yeo ! Anyone can contribute an answer, even non-tutors.
Could u kindly advise me how to derive the answer of 105square cm without making assumption that there is a similar equilateral triangle directly opposite of the existing shaded equilateral triangle ? Thanks !
Date Posted: 6 years ago
Views: 270
Since the question already state that the triangle is equaliteral,you should use the information.So the triangle is not by assumption,it is by fact.
Draw a straight line from the intersecting of the two quarters, to the top and bottom left corner of the square respectively, this 2 lines are also the radius of the quarters. It then form a equilateral triangle within the shaded region in the right, same size as the one to the left. It is not an assumption.
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