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Question

The area of a rhombus is 216 cm2. If its one diagonal is 24cm; find the length of its side.

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Solution

Area of a rhombus =12×(diagonal 1×diagonal 2)

Given, Area =216cm2

=>12×24×diagonal 2=216cm2

Hence, diagonal 2=18cm

In a rhombus, the diagonals bisect each other at 900
Referring the diagram, if PR=18cm, SQ=24cm, then OP=9cm, OQ=12cm
Since, POQ is a right angled triangle,
PQ2=OP2+OQ2=>92+122=225
PQ=225=15cm
Hence, the length of the sides of the diagonal =15cm

224407_183032_ans.png

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