PSLE Math 2019 Paper 2 Question 16
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(5 Identical Semicircles Question)
PSLE Math 2019 Paper 2 Question 16
(a) Ans: 36cm
To find b:
b → 22cm - 12cm = 10cm
diameter → 10cm + 10cm + 16cm = 36cm
(b) Ans: 366.74cm
Perimeter of the figure → (5/2 × π × 36) cm + (22 + 12 + 16 + 12 + 22) cm
≈ 366.74cm (2 d.p)
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