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the picture is a model of a barn that is being built the bottom is a perfect cube with a square pyramid sitting on top the architect wants to paint the whole outside of the model (including the bottom) red, how much red paint will he need?

The Picture Is A Model Of A Barn That Is Being Built The Bottom Is A Perfect Cube With A Square Pyramid Sitting On Top The Architect Wants To Paint The Whole Ou class=

Answer :

[tex]\text{area}=184\text{ square cm}[/tex]

Explanation

Step 1

to find the total area divide the figure

[tex]\begin{gathered} \text{Area}=4\text{ squares+4 triangles} \\ \end{gathered}[/tex]

now, we need to find the area of the triangle

so, we need to find the hypotenuse of the triangle

[tex]\begin{gathered} \text{hyp}^2=3^2+4^2 \\ \text{hyp}^2=9+16 \\ \text{hyp}^2=25 \\ \sqrt[]{\text{hyp}^2}=\sqrt[]{25} \\ \text{hyp}=5 \end{gathered}[/tex]

so, the height of the triangle is 5 cm

Step 2

let

side of the square=6

heigth of the triangle=5

base of the triangle=6

[tex]\begin{gathered} \text{Area}=4\text{ squares+4 triangles} \\ \text{Area}=4(side^2)\text{+4 }(\frac{b\cdot h}{3}) \\ \text{replace} \\ \text{Area}=4(6^2)\text{+4 }(\frac{6\cdot5}{3}) \\ \text{area}=4(36)+4(10) \\ \text{area}=144+40 \\ \text{area}=184\text{ square cm} \end{gathered}[/tex]

I hope this helps you

View image MayceeP523092
View image MayceeP523092

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