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11-03-2018
Mathematics

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In the figure to the right, ABCD is a rectangle. Find the area of △ABC, if the area of △AOD is 10.

In the figure to the right ABCD is a rectangle Find the area of ABC if the area of AOD is 10 class=

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Аноним Аноним

11-03-2018

Assuming BOD and AOC are straight lines.

Area of the rectangle = 4 x ΔAOD
Area of the rectangle = 4 x 10
Area of the rectangle = 40 unit²

Area of ΔABC = 1/2 x 40
Area of ΔABC = 20 unit²

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