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Methodist Girls' School (Primary) 2025 P6 Maths Prelim — Paper 1 Booklet A Q8 Solution

Paper 1 Booklet A · Q8 · 1 mark · Area and Perimeter

Question

The figure below shows a big circle and a small circle. The big circle has a diameter of 28 cm. Find the area of the small circle. (Take $\pi = \frac{22}{7}$)

1. 22 cm²
2. 44 cm²
3. 154 cm²
4. 616 cm²

Answer: 3

Worked solution

$\text{Big circle diameter} = 28 \text{ cm, so big radius} = 14 \text{ cm}$
$\text{From the figure, the small circle has radius } 7 \text{ cm}$
$\text{Area} = \pi r^2 = \frac{22}{7} \times 7 \times 7$
$= 154 \text{ cm}^2$

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