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Jyoti’s diagram:
The given shape is splitted into two congruent trapeziums.
Area of one trapezium =
=
=
∴ Area of the pentagonal shape =
Kavita's diagram:
The given shape is splitted into a square and a triangle.
Area of the square =
Area of the triangle =
∴ Area of the pentagonal shape =
Another way of finding the area of the pentagonal shape:
BY splitting the pentagonal shape into 3 triangles, we have:
Area of triangle I =
Area of trianlge II =
Area of triangle III =
∴ Area of the pentagonal shape =
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