Question
EFGH is a rectangular piece of paper with a perimeter of 170 cm. EF is 63 cm and point J is the mid-point EH. It is folded along the dotted line as shown in Figure 1. What is the area of the shaded triangle?
2 m

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EFGH is a rectangular piece of paper with a perimeter of 170 cm. EF is 63 cm and point J is the mid-point EH. It is folded along the dotted line as shown in Figure 1. What is the area of the shaded triangle?