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primary 6 | Maths
| Measurement
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Date Posted: 4 years ago
Views: 236
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a) (10cm×5cm) ×2=100cm²
(5cm×4cm) ×2=40cm²
(4cm×10cm) ×2=80cm²
100cm²+80cm²+40cm²
=220cm²
b) (I) 4cm-1cm-1cm=2cm
5cm-1cm-1cm=3cm
10cm-1cm-1cm=8cm
8cm×3cm×2cm=48
(II) row 1> 16+6=22
row 2>4
row 3>4
row 4>22
22+4+22+4=52
(5cm×4cm) ×2=40cm²
(4cm×10cm) ×2=80cm²
100cm²+80cm²+40cm²
=220cm²
b) (I) 4cm-1cm-1cm=2cm
5cm-1cm-1cm=3cm
10cm-1cm-1cm=8cm
8cm×3cm×2cm=48
(II) row 1> 16+6=22
row 2>4
row 3>4
row 4>22
22+4+22+4=52
Thx
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