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primary 6 | Maths | Measurement
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Bebe Fox
Bebe Fox

primary 6 chevron_right Maths chevron_right Measurement chevron_right Singapore

Green Tea

Date Posted: 4 years ago
Views: 375
J
J
4 years ago
Height of △ ABC
= 2cm + 5cm + 3cm
= 10cm

Height of △BDE
= 5cm + 3cm
= 8cm


Area of △ABC = ½ x 10cm x 6cm
= 30cm²
Unshaded area of this △
= 30cm² - 8cm²
= 22cm²

Area of △BDE = ½ x 8cm x 8cm
= 32cm²
Unshaded area of this △
= 32cm² - 8cm²
= 24cm²

Total unshaded area
= 22cm² + 24cm²
= 46cm²
snell
Snell
4 years ago
triangle ABC = 0.5 x 6 x 10 = 30 cm ²

triangle BDE = 0.5 x 8 x 8 = 32 cm ²

unshaded area
= 30+32-8-8
= 46 cm ²


ans: (1)


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AC Lim
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