What power

What power should the radiator have in a room 5x4 meters with a height of 3 meters?

Hint:
Calculate 35 watts per meter³ when you need 22 degrees in the room, but you need about 24 degrees in the bathroom. It's an old heating cheat, but it will help you.

Final Answer:

P =  2100 W

Step-by-step explanation:

$$\begin{gathered} a=5\text{m} \\ b=4\text{m} \\ c=3\text{m} \\ V=a\cdot b\cdot c=5\cdot 4\cdot 3=60{\text{m}}^3 \\ k=35{\text{W/m}}^3 \\ P=k\cdot V=35\cdot 60=2100\text{W} \end{gathered}$$

Try another example