Question
The rectangle is made up of some triangles. The four unshaded triangles are identical. The perimeter of the rectangle is 142 cm. Its breath is 19 cm. Find the total area of the shaded triangles.
4 m

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The rectangle is made up of some triangles. The four unshaded triangles are identical. The perimeter of the rectangle is 142 cm. Its breath is 19 cm. Find the total area of the shaded triangles.