A rectangular plot is 800m long and 415m wide
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Step-by-step explanation:
30m*20m by just looking at the problem.
Length = L, breadth = B.
LB = 600 … (1)
2(L+B)=100 … (2), or
L+B = 50 … (2a)
From (2a), B = 50 - L. Put that in (1) to get,
L(50 - L) = 600, or
50L - L^2 -600 = 0, or
L^2 -50L + 600 = 0, or
(L - 30)(L - 20) = 0
Hence L = 30m and B = 20 m
The plot is 30 m long and 20 m wide.
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