Question

the area of rhombus is 120cm and one of the diagonals is 8cm find ​

Answer 1

Answer:

Area of a rhombus=

2

1

×product of its diagonals

Area of a rhombus=

2

1

×d

1

×d

2

⇒120=

2

1

×20×d

2

⇒d

2

=

20

120×2

=12cm

∴ the other diagonal is 12cm

Answer 2

Answer:

Area of rhombus=120

one of the diagonal=8cm

Area of a rhombus=PQ/2

120cm=8.x/2

120cm=8x/2

120cm=4x

x=120/4

x=30cm