Mathematics
The perimeter of a rectangular plot is 560 m and the length of the plot is three times its width; the length of the plot is:
140 m
210 m
280 m
Linear Eqns One Variable
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Answer
Let the width of the rectangular plot be w.
Length of the rectangular plot = 3w
Perimeter = 560 m
As we know, perimeter of a rectangle = 2(l + w)
⇒ 2 (3w + w) = 560 m
⇒ 2 x 4w = 560 m
⇒ 8w = 560 m
⇒ w = m
⇒ w = 70 m
Length of rectangle = 3w
= 3 x 70 m
= 210 m
Hence, option 2 is the correct option.
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