The area of the rectangular plot is equal to 144 m2. Find out the length of this section

The area of the rectangular plot is equal to 144 m2. Find out the length of this section if you know that the width is 9m. deduct the perimeter of this site.

The area of the rectangular plot is equal to 144 m2. Find out the length of this section if you know that the width is 9m. deduct the perimeter of this site.
The area of the site is equal to the product of length and width, hence the length:
S = a * b
a = S / b
a = 144/9
a = 16 (m) – section length.
2) The perimeter of the rectangle is the sum of the length and width times 2:
P = (a + b) * 2
P = (16 + 9) * 2
P = 25 * 2
P = 50 (m) – plot perimeter.
Answer: 16 m; 50 m.