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primary 6 | Maths | Measurement
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primary 6 chevron_right Maths chevron_right Measurement chevron_right Singapore

Help me with this pls

Date Posted: 6 months ago
Views: 50
6 months ago
You can combine one small curved shaded area with the small shaded quadrant to get a small shaded square.

The other small curved shaded area can be combined with the big curved shaded area to get a larger shaded area. You can find this area by subtracting the big quadrant from the large square.

Small shaded square has half the length of the big square. So it's area = 10cm x 10cm = 100cm²

The larger shaded area = 20cm x 20cm - ¼ x 3.14 x 20cm x 20cm

= 400cm² - 314cm²
= 86cm²

Total shaded area = 86cm² + 100cm² = 186cm²
6 months ago
Thank you

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Tay Zhi Xiang
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6 months ago
Thank you for helping me