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primary 6 | Maths
| Measurement
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Date Posted: 5 years ago
Views: 271
Figure 2 = ½ x circumference of circle + diameter = ½ x circumference + 2 x radius
= 36cm
Figure 4 = ⅛ x circumference of circle + 2 x radius = 19.5cm
Difference between these two figures
= ½ x circumference - ⅛ x circumference
= ⅜ x circumference
Difference also = 36cm - 19.5cm
= 16.5cm
so 16.5cm = ⅜ of circumference
⅛ = 16.5cm ÷ 3 = 5.5cm
Circumference = 5.5cm x 8 = 44cm
= 36cm
Figure 4 = ⅛ x circumference of circle + 2 x radius = 19.5cm
Difference between these two figures
= ½ x circumference - ⅛ x circumference
= ⅜ x circumference
Difference also = 36cm - 19.5cm
= 16.5cm
so 16.5cm = ⅜ of circumference
⅛ = 16.5cm ÷ 3 = 5.5cm
Circumference = 5.5cm x 8 = 44cm
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Date Posted:
5 years ago
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