Colour - billboard

The billboard has the shape of a parallelogram. Its length is 4.9 m, and its corresponding height is 3.5 meters. Calculate how much (kg) paint must be purchased for redecoration if 1 kg covers 4 m² of the billboard surface.

Final Answer:

x =  4.29 kg

Step-by-step explanation:

$$\begin{gathered} a=4.9\text{m} \\ h=3.5\text{m} \\ \sigma =4{\text{m}}^2\text{/kg} \\ S=a\cdot h=4.9\cdot 3.5=\frac{343}{20}=17.15{\text{m}}^2 \\ x=S/\sigma =17.15/4=4.29\text{kg} \end{gathered}$$

Try another example