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14 September, 08:31

the cost of fencing a rectangular field at rupees 30 per metre is rupees 2400 if the length of the its field is 24m than its breadth

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  1. 14 September, 11:51
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    breadth = 8, length = 32

    Step-by-step explanation:

    perimeter = 2 x (length x breadth)

    = 2 x ((24 + b) + b))

    = 2 x (24 + 2b)

    = 48 + 4 b

    48 + 4b meters costs rupees 2400

    each meter costs rupees 30

    so,

    30 x (48 + 4b) = 2400

    1440 + 120b = 2400

    120b = 960

    b = 8

    the breadth is 8m, the length is 8 + 24 = 32m
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