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Question

The area of rhombus is 216 sq. cm. If its one diagonal is 24 cm, find length of its side.

A
15 cm
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B
10 cm
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C
18 cm
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D
9 cm
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Solution

The correct option is C 15 cm
The one diagonal d1=24 cm
Area of rhombus=216 sq.cm

Since,
Area of rhombus=12×d1×d2

216=12×24×d2

216=12×d2

21612=d2

d2=18cm

Side of rhombus=(d12)2+(d22)2
=(242)2+(182)2
=122+92
=144+81
=15cm

Side of Rhombus=15 cm

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