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Sagot :
Answer: [tex]282.85\ cm^2[/tex]
Step-by-step explanation:
Given
Radius of cylinder [tex]r=5\ cm[/tex]
The height of the cylinder is [tex]h=9\ cm[/tex]
The surface area of a cylinder is [tex]2\pi rh[/tex]
If only the outer is considered then, the area required is
[tex]\Rightarrow A=2\times \dfrac{22}{7}\times 5\times 9\\\\\Rightarrow A=282.85\ cm^2[/tex]
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