AC Lim's answer to Nicole's Primary 6 Maths Measurement Singapore question.
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I assume the triangle length are diameter for ni and small circles.
Hope this help
Hope this help
Date Posted:
5 years ago
Area of small circle is 18π sq each, need to multiply by 2? Why shaded have to add in the triangle of 36? Thank you.
18 x 22/7 x 22/7 (2 times 22/7, not x2)
Because we take small circle area to minus the of the small circle’s unshaded parts (but this unshaded part we don’t know the area) so I minus from 1/2 big circle and triangle area should not included, so we add in again.
Because we take small circle area to minus the of the small circle’s unshaded parts (but this unshaded part we don’t know the area) so I minus from 1/2 big circle and triangle area should not included, so we add in again.
I uploaded another answer for your reference.
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