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# Calculating Areas

If the area of a square is 144, what is the perimeter of the square? If a square and a circle have the same perimeter, which of them will have a greater area?

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If each square has a side length of 1, what is the area of the blue trapezium?

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Chung Kevin**

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Which of the following triangles has a larger area:

- triangle A with side lengths \( 13, 13, 10 \), or
- triangle B with side lengths \( 13, 13, 24\, ?\)

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Calvin Lin**

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Given that all the circles have equal radius of 10 cm, what is the area of the shaded blue part?

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Sobhan Bihan**

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In this grid, each rectangle is labelled with its area. What area should replace the question mark?

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Andrew Ellinor**

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In the above figure, which shaded area is larger?

The small circles all have the same size.

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Chung Kevin**

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