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seraphim [82]
3 years ago
7

The length of a rectangle is three times it’s width if the perimeter of the rectangle is 80m find it’s area

Mathematics
1 answer:
andre [41]3 years ago
8 0

Answer:

 =3y^2

Step-by-step explanation:

let,

       length: x

        width: y

According to condition,

      x = 3y   -----------(1)

Second condition

      Perimeter = 2 (l + b)

         80 = 2 (x + y)

         x + y = 40  -------------(2)

              To find area,

         Area = L x B

                    =3y x y

                     = 3y^2

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