1.

Rajat cuts out two equilateral triangular pieces of cardboard, each of area 300 sq. cm, and then placed them upon a table, one on top of the other such that the triangles completely coincide with each other. Now, if he rotated one of the two triangles by 180∘ about a vertical axis passing through its centroid, find the area that is common to both the triangles.

Answer»

Rajat cuts out two equilateral triangular pieces of cardboard, each of area 300 sq. cm, and then placed them upon a table, one on top of the other such that the triangles completely coincide with each other. Now, if he rotated one of the two triangles by 180 about a vertical axis passing through its centroid, find the area that is common to both the triangles.



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