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Part 1
The rectangle hown ha a perimeter of 78 cm and the given area. It length i 3 more than twice it width. Write and olve a ytem of equation to find the dimenion of the rectangle



Answer :

The length of the triangle is 39 cm and the width of the triangle is 13 cm.

Triangle:

A triangle is a polygon with three sides and three vertices. It is one of the basic shapes in geometry. A triangle with angles A, B, and C is represented by Δ ABC.

Now,

Let, width of rectangle = x cm

So, the length of rectangle = 3x

Given that,

perimeter of the rectangle = 78 cm

         2 (length + breadth )  = 78

                                 2(3x+x) = 78

Now,

  2(3x + x) = 78

⇒ 2(4x) = 78

⇒ 4x = ​78/2

⇒ 3x = 39

⇒ x = 39/3

​⇒ x = 13

​Thus, breadth/width of rectangle = 13 cm

So, length of rectangle =3x

                                       =3 × 13

                                       =39 cm

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