Question

Length of the diagonalas of
and 40cm
rhombus
find area of the
are
12 cm
rhombus.​

Answer 1

Answer:

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Answer 2

Answer:

Given the perimeter of rhombus is 40 cm and one diagonal is 12 cm

We know that perimeter of rhombus=

2

p

2

+q

2

 where -p and q are diagonal of  rhombus

∴40=2

(12)

2

+q

2

⇒20=

144+q

2

⇒400=144+q

2

⇒q

2

=400−144=256

⇒q=16 cm 

Then length of second diagonal is 16 cm 

Then area of  rhombus=

2

p×q

=

2

12×16

=

2

192

=96Cm

2

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