Convert to Liters: Solving 7250 dm³ + 2500 ml Combined Units Problem

To tackle this problem, we'll follow these solutions steps:

• Step 1: Convert $7250 \, \text{dm}^3$ to liters. Since $1 \, \text{dm}^3$ is equivalent to $1 \, \text{liter}$, we have:

$7250 \, \text{dm}^3 = 7250 \, \text{liters}$.

• Step 2: Convert $2500 \, \text{ml}$ to liters. Knowing that $1 \, \text{ml} = 0.001 \, \text{liter}$, we calculate:

$2500 \, \text{ml} = 2500 \times 0.001 \, \text{liters} = 2.5 \, \text{liters}$.

• Step 3: Add both quantities, remembering they are now both in liters:

$7250 \, \text{liters} + 2.5 \, \text{liters} = 7252.5 \, \text{liters}$.

Hence, the total volume is $\boxed{7252.5 \, \text{liters}}$.

In checking choices, the correct answer is $7252.5 \, \text{liters}$, which corresponds to choice 2.