Question
The lengths of the diagonals of a rhombus are 2a and 2b.
Its perimeter isSolution
ATQ, In a rhombus, the diagonals bisect each other at right angles. So, each side of the rhombus forms a right-angled triangle with half of the diagonals. Each half-diagonal is:Â 
 Using the Pythagorean theorem, the side ‘’s’’ of the rhombus is: 
 The perimeter of a rhombus is: 
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