The area of a rectangular plot is 12sq.m,the sum of diagonal and its length is 3 times its breadth find its perimeter please say the process answer is 14 but process wanted
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Area=12sq.m
l*b=12.....eq=1
d=√l²+b²
d+l=3b
√l²+b²+l=3b
√l²+b²=3b-l
l²+b²=9b²+l²-6bl (squaring both sides)
9b²-b²=6bl
8b²=6bl
8b=6l
b=6l/8
putting value of b in eq=1
l*6l/8=12
l=4 b=3
perimeter=2*(l+b)
=2*(4+3)
2*7=14
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