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julia-pushkina [17]
4 years ago
12

14. The Great Wall of China's total length is

Mathematics
1 answer:
alexdok [17]4 years ago
5 0

Answer:

14. the great wall was 9,680,446.194 yards during the Ming dynasty

15. about 1.726e+6

16. 13170.5838

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Check the picture below.

\bf \textit{lateral area of a cone}\\\\
LA=\pi r\stackrel{slant-height}{\sqrt{r^2+h^2}}~~
\begin{cases}
LA=539\pi \\
r=49
\end{cases}\implies 539\pi =\pi 49\sqrt{r^2+h^2}
\\\\\\
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