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25-11-2016
Mathematics

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Two similar cones are shown in the image below.
What is the approximate surface area of the larger cone?

Two similar cones are shown in the image below What is the approximate surface area of the larger cone class=

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alsteva alsteva

30-11-2016

[tex]28:R=24:8 \\24R=28\times8 \\ \\R= \frac{28\times8}{24} = \frac{28}{3} \\ \\s=28\\ \\A= R^2\pi +Rs\pi=R\pi(R+s)=\frac{28}{3} \pi(\frac{28}{3} +28)\approx 1,095[/tex]

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