Question
Triangle QRS and triangle TRS share the same base RS. The height of the triangle QRS is 4 times the height of Triangle TRS. Given that TU is 4 m and RS is 20 m, find the area of the shaded part.
4 m

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Triangle QRS and triangle TRS share the same base RS. The height of the triangle QRS is 4 times the height of Triangle TRS. Given that TU is 4 m and RS is 20 m, find the area of the shaded part.