Question
Triangle GHJ and triangle KHJ share the same base HJ. The height of the triangle GHJ is 4 times the height of Triangle KHJ. Given that KL is 3 cm and HJ is 20 cm, find the area of the shaded part.
4 m

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Triangle GHJ and triangle KHJ share the same base HJ. The height of the triangle GHJ is 4 times the height of Triangle KHJ. Given that KL is 3 cm and HJ is 20 cm, find the area of the shaded part.