The length and breadth of a …
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Shweta Gulati 7 years, 2 months ago
Let the length and breadth of the rectangle be 4x and 3x cms.
Diagonal= 25 cm
Applying pythagoras theorem,
252= (4x)2+(3x)2
16x2+9x2=625
25x2=625
x2=25
So, x=5
Length= 4x=4 x 5= 20cm and breadth = 3x= 3 x 5 =15cm
Perimeter of rectangle= 2(l+b) =2(20+15)=2(35)= 70cm
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