Question
PSLE
John cut out three identical right-angled triangles. He joined them to form the figure KLMN shown. MN = 100 m and NK = 130 m. The perimeter of the figure is 400 m. Find the area of the figure KLMN.
2 m

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PSLE
John cut out three identical right-angled triangles. He joined them to form the figure KLMN shown. MN = 100 m and NK = 130 m. The perimeter of the figure is 400 m. Find the area of the figure KLMN.