Find the perimeter of the beside rectangle whose length is 6x + y and

1.	Find the perimeter of the beside rectangle whose length is 6x + y and breadth is 3x – 2y.
Answer» Given length of rectangle l = 6x + y breadth b = 3x – 2y Perimeter of Rectangle = 2 (l + b) = 2[(6x + y) + (3x – 2y)] = 2[6x + y + 3x – 2y] = 2[(6 + 3)x + (1 – 2)y] = 2[9x + (- 1) y] = 2[9x – 1y] = 2 × (9x) – 2 × (1y) ∴ Perimeter of rectangle = (18x – 2y) units.

Find the perimeter of the beside rectangle whose length is 6x + y and breadth is 3x – 2y.

Answer»

Given length of rectangle l = 6x + y

breadth b = 3x – 2y

Perimeter of Rectangle = 2 (l + b)

= 2[(6x + y) + (3x – 2y)]

= 2[6x + y + 3x – 2y]

= 2[(6 + 3)x + (1 – 2)y]

= 2[9x + (- 1) y] = 2[9x – 1y]

= 2 × (9x) – 2 × (1y)

∴ Perimeter of rectangle = (18x – 2y) units.