The length of a rectangular plot is 12m and its perimeter is 60m. Find its width.

12 m

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11 m

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17 m

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18 m

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Solution

The correct option is D
18 m

Perimeter of the rectangle = Sum of the length of its four sides.
Let the width of the plot = y metres.

$P e r i m e t e r o f a r e c t a n g l e = 2 (l e n g t h \times w i d t h)$
60 =2(12 +y)

30 = (12 + y)

y = 30 - 12 = 18

Hence, the width of the plot = 18 m.

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