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One side of a rhombus is 6.5 cm and one ...

One side of a rhombus is 6.5 cm and one of it’s diagonal is 12 cm. What is the area of the rhombus?
किसी समचतुर्भुज की एक भुजा 6.5 सेमी की है तथा इसका एक विकर्ण 12 सेमी का है | इस समचतुर्भुज का क्षेत्रफल ज्ञात करें |

A

`78 cm^2`

B

`15 cm^2`

C

`30 cm^2`

D

`60 cm^2`

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