Question
The figure is made up of three triangles, ABC, DEF and GHJ not drawn to scale. The area of triangle GHJ is eight times the area of triangle ABC. The area of triangle ABC is 13 of triangle DEF. The area of triangle ABC is 21 cm2. What is the total area of the shaded parts?
2 m

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The figure is made up of three triangles, ABC, DEF and GHJ not drawn to scale. The area of triangle GHJ is eight times the area of triangle ABC. The area of triangle ABC is 13 of triangle DEF. The area of triangle ABC is 21 cm2. What is the total area of the shaded parts?