Fill in the blank
`12 sq. m = "____________" sq. km`

Answer

To solve the question `12 sq. m = "____________" sq. km`, we need to convert square meters to square kilometers. Here’s the step-by-step solution:

### Step 1: Understand the conversion factor
We know that:
1 square kilometer (sq. km) = 1,000,000 square meters (sq. m).

### Step 2: Set up the conversion
To convert from square meters to square kilometers, we can use the conversion factor:
1 sq. km = 1,000,000 sq. m.

### Step 3: Write the equation
We want to find out how many square kilometers are in 12 square meters. We can set up the equation as follows:
\[ \text{Area in sq. km} = \frac{\text{Area in sq. m}}{1,000,000} \]
Substituting the value we have:
\[ \text{Area in sq. km} = \frac{12 \text{ sq. m}}{1,000,000} \]

### Step 4: Perform the calculation
Now, we calculate:
\[ \text{Area in sq. km} = \frac{12}{1,000,000} = 0.000012 \text{ sq. km} \]

### Step 5: Fill in the blank
Thus, we can fill in the blank:
12 sq. m = **0.000012** sq. km.

---