## The area of a rectangular field is 99m2. The length of one side is 11m. The farmer needs to know its perimeter to work out how<

Question

The area of a rectangular field is 99m2. The length of one side is
11m. The farmer needs to know its perimeter to work out how
much fencing will be needed? Help

in progress 0
3 years 2021-08-24T21:31:46+00:00 2 Answers 7 views 0

40 m

Step-by-step explanation:

Hi there!

What we know:

• The field is rectangular
• A = 99 m²
• Length of one side = 11 m

1) Find the length of the other side

Plug all the given information into the area formula for a rectangle:

where A is the area, l is the length and w is the width

Divide both sides by 11 to isolate w

Therefore, the width of the field is 9 m.

2) Find the perimeter of the field

where l is the length and w is the width

Plug in the length (11 m) and the width (9 m)

Therefore, the perimeter of the field is 40 m.

I hope this helps!

40 m

Step-by-step explanation:

The length of another side

= 99÷11

= 9 m

The perimeter of the field

= 9×2 + 11×2

= 40 m