Calculate total satellites for Romania

From the pie chart, Romania accounts for 10% of the total 12000 satellites.

$\text{Romania Satellites} = \frac{10}{100} \times 12000 = 1200$

Calculate ratio segments

Given the ratio of network to agriculture satellites is 7:8, the sum of parts is $7 + 8 = 15$.

$\text{Sum of parts} = 15$

Find the number of agriculture satellites

The value of one part is $1200 / 15 = 80$. Since agriculture satellites represent 8 parts, we multiply 8 by 80.

$\text{Agriculture Satellites} = 8 \times \left( \frac{1200}{15} \right) = 8 \times 80 = 640$