A rectangular tank has dimensions 25 cm, 35 cm, and 16 cm. What is its capacity in millilitres?

Length ($L$) = $25 \text{ cm}$
Width ($W$) = $35 \text{ cm}$
Height ($H$) = $16 \text{ cm}$

The formula for the volume of a rectangular prism is $V = L \times W \times H$.

We know that $1 \text{ cm}^3 = 1 \text{ mL}$.
So, $14000 \text{ cm}^3 = 14000 \text{ mL}$.

The capacity of the tank in millilitres is $\text{14000 mL}$.