Question

- Area & perime... Sina wants to paint two walls on her bedroom. One wall has the dimensions 2.7 mx 4 m and the other 2.7 mx 3 m. If a door with dimensions of 1 mx 2.3 m is in one of the walls, what is the total area of the wall that Sina needs to paint? m2 ........

Answer 1

In order to determine the area tota that Sina needs to paint, first, calculate the area of both walls

`\begin{gathered} \text{Wall}_1=2.7\cdot4 \\ \text{Wall}_1=10.8m^2 \\ \text{Wall}_2=2.7\cdot3 \\ \text{Wall}_2=8.1m^2 \end{gathered}`

then, calculate the area of the door

`\begin{gathered} \text{Door}=1\cdot2.3 \\ \text{Door}=2.3m^2 \end{gathered}`

Finally, add the area of both walls and subtract the area of the door

`\begin{gathered} 10.8+8.1-2.3 \\ 16.6m^2 \end{gathered}`

Sina needs to paint 16.6 square meters.