Diameter 44511

The tower's roof is a cone with a base diameter of 12 m and a height of 8 m. At least how many square meters of roofing are needed to cover it?

Correct answer:

S =  188.4956 m²

Step-by-step explanation:

$$\begin{gathered} D=12\text{m} \\ h=8\text{m} \\ r=D/2=12/2=6\text{m} \\ s=\sqrt{r^2+h^2}=\sqrt{6^2+8^2}=10\text{m} \\ S=\pi \cdot r\cdot s=3.1416\cdot 6\cdot 10=188.4956{\text{m}}^2 \end{gathered}$$

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