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Ede4ka [16]
3 years ago
13

the breadth of a rectangular plot is 20 m less than its lengths find its dimensions if its perimeter is 120​

Mathematics
1 answer:
tangare [24]3 years ago
4 0

Answer:

breadth = 25m

length= 35m

Step-by-step explanation:

perimeter is distance all round a figure

in a rectangle we have two pairs of  opposite but equal lines

breadth = 2x( because of the two breadths in a rectangle) - 20

length = 2x(  because of the two lengths in a rectangle)

perimeter = 2x + 2x - 20

120 = 4x - 20

120 + 20 = 4x

140 = 4x

35 = x

to get the dimensions, we have to divide by 2 as we took both parts of each dimension

breadth =<u> 2x - 20</u>

                     2

             <u>=2(35) - 20</u>

                      2

              <u>= 70 - 20</u>

                      2

              <u>= 50m</u>

                   2

               = <u>25m</u>

length =<u> 2x</u>

              2

        <u>= 2(35)</u>

              2

        <u> = 70m</u>

              2

           = <u>35m</u>

<u />

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