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Question

ABCD is a rhombus If area (ABCD)=24 cm2 and AC=8 cm, find the measure of the side of the rhombus.


A

5 cm

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B

6 cm

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C

7 cm

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D

8 cm

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Solution

The correct option is A

5 cm


Area of rhombus =12× (product of digonals)

12×AC×BD=24

BD=24×28

BD = 6 cm

In ΔOAB,OA=12AC=82=4 cm

OB=12BD=62=3 cm

Also, OA2+OB2=AB2

AB2=16+9=25

AB=25=5

So, sides of rhombus are 5 cm each.


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