Find area of rhombus whose perimeter is 100m and its diagonal is 40m
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The perimeter of the rhombus = 100 m.
Each side of the rhombus = 100/4 = 25 m.
One diagonal = 30 m. Half its length - 15 m
The other diagonal = 2*[25^2–15^2]^0.5 = 2*20 = 40 m.
Area of rhombus = 30*40/2 = 600 sq m.
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