Question

the breadth of a rectangle is 5 more than one third of the length the perimeter of the triangle is 42 cm find the length of the rectangle

Answer 1

Let the length of the rectangle be y and the width be x.

From the information we have :

x = 1/3y + 5

making y the subject of the equation we have :

1/3y = x - 5

y = (x - 5)3

y = 3x - 15

The perimeter from the dimensions is :

2x +2(3x - 15) = 42

2x + 6x - 30 = 42

8x = 72

x = 9

The length will be :

(3 × 9 - 15) = 12 cm

Width is 9cm

Answer 2

Answer:

hope it is help full for you