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Sagot :
Answer:
Surface area = [tex]268.47ft^3[/tex]
Step-by-step explanation:
Formula to find the surface area of a triangle:
[tex]SA=\pi rl+\pi r^2[/tex]
(SA = surface area)
[tex]\pi =3.14\\r=radius\\l=length[/tex]
[tex]SA=(3.14)(5)(12.1)+(3.14)(5)^2[/tex]
[tex]SA=189.97+78.5[/tex]
[tex]SA=268.47ft^3[/tex]
hope this helps......
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