To find the area of the greenhouse, you can use the formula for the area of a rectangle, which is given by:
\[ \text{Area} = \text{length} \times \text{width} \]
For the greenhouse with dimensions 25 cm by 10 cm:
\[ \text{Area} = 25 , \text{cm} \times 10 , \text{cm} = 250 , \text{cm}^2 \]
Therefore, the area of the greenhouse is \( 250 , \text{cm}^2 \).