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primary 6 | Maths | Ratio
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Qadirah
Qadirah

primary 6 chevron_right Maths chevron_right Ratio chevron_right Singapore

I need help pls ASAP and thanks

Date Posted: 3 years ago
Views: 584

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Lim
Lim's answer
63 answers (A Helpful Person)
We know that rectangle(shaded) : rectangle(unshaded) ratio is 3 : 7.

Next, given that circle : rectangle ratio is 7 : 5, and the area of the rectangle is (3+7) = 10 units, we can deduce that the circle is 14 units.

Circle(shaded) already took up 3 units, thus it follows that circle(unshaded) is 11 units.

Finally, to get the shaded : unshaded ratio, we have:
3 : (11+7) -> 3 : 18 -> 1 : 6