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Find the perimeter of the rectangle whose length is 12 cm and a diagonal 13 cm
In a Rectangle: The width, length and diagonal form a right angled triangle
Diagonal2=Breadth2+Length2
132=Breadth2+ 122
Breadth2 =132- 122
Breadth2 =169 - 144
Breadth2 = 25
=>
Breadth = 5
Perimeter = 2(l+b)
=2(12 + 5)
= 34 cm
Updated on: 10-Oct-2022
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