The rectangular piece of land measures 2 m by 3 m. Each side is to be fenced with three rows of wire. What is the length of wire needed?

Options

A. 45m
B. 44m
C. 30m
D. 21m

Answer

To solve the problem of finding the length of wire needed to fence a rectangular piece of land measuring 2 m by 3 m with three rows of wire, we can follow these steps:

### Step 1: Identify the dimensions of the rectangle.
The dimensions of the rectangular piece of land are:
- Length (L) = 3 m
- Width (W) = 2 m

### Step 2: Calculate the perimeter of the rectangle.
The formula for the perimeter (P) of a rectangle is given by:
\[ P = 2 \times (L + W) \]

Substituting the values:
\[ P = 2 \times (3 \, \text{m} + 2 \, \text{m}) \]
\[ P = 2 \times 5 \, \text{m} \]
\[ P = 10 \, \text{m} \]

### Step 3: Calculate the total length of wire needed.
Since each side is to be fenced with three rows of wire, we need to multiply the perimeter by 3:
\[ \text{Total wire needed} = 3 \times P \]
\[ \text{Total wire needed} = 3 \times 10 \, \text{m} \]
\[ \text{Total wire needed} = 30 \, \text{m} \]

### Final Answer:
The total length of wire needed is **30 meters**.

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