the length of a rectangular plot is greater than thrice its breadth by 2 metre the area of the plot is 120 square metre find the length and breadth of the plot
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Answer:
B = 6m L=20m
Step-by-step explanation:
let breadth of rectangular plot be 'b'
and length be L
L = 3b +2
area is L × B = 120
(3b +2)b = 120
3b^2 +2b - 120 =0
3b^2 +20b -18b -120 =0
b (3b +20) -6 (3b +20) =0
(3b + 20)(b -6) =0
hence breadth = 6m
length = 3(6) +2 =20m
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