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Question

Shows that the point A(6,1),B(8,2), C(9,4) and D(7,3) are the vertices of a rhombus. find its area.

A
4 sq units
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B
3 sq units
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C
5 sq units
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D
6 sq units
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Solution

The correct option is B 3 sq units
The given points are A(6,1),B(8,2),C(9,4) and D(7,3)
AB=(68)2+(12)2=4+1=5 units
BC=(89)2+(24)2=14=5 units
CD=(97)2+(43)2=4+1=5 units
AD=(76)2+(31)2=1+4=5 units
AC=(69)2+(14)2=9+9=32 units
BD=(87)2+(23)2=1+1=2 units
AB=BC=CD=AD=5 and ACBD
Area(Rhombus ABCD) =12×AC×BD
=12×32×2
=3 sq. units
Hence, Area of rhombus is 3 sq. units.

1257556_1332822_ans_bfe83dbdb0c84ef9bdcb3b7f8c2f4834.PNG

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