dionicia12
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I want to paint all three walls of the kitchen. One was a half cylinder. I want to paint the walls only not the ceiling. The walls are 9-foot high how many square feet will I be painting round to the nearest tenth ​

I want to paint all three walls of the kitchen One was a half cylinder I want to paint the walls only not the ceiling The walls are 9foot high how many square f class=

Respuesta :

calculista

Answer:

[tex]490.9\ ft^{2}[/tex]

Step-by-step explanation:

we know that

The total area is equal to

[tex]A=10(h)+2\pi r(h)+10(h)[/tex]

we have

[tex]h=9\ ft[/tex]

[tex]r=5.5\ ft[/tex]

[tex]\pi=3.14[/tex]

substitute

[tex]A=10(9)+2(3.14)(5.5)(9)+10(9)[/tex]

[tex]A=490.9\ ft^{2}[/tex]