3 years ago

Find the surface area of the cone. Use 3.14 to approximate pi.

Mathematics

1 answer:

Ainat [17]3 years ago

5 0

Hope this would help you!!!

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sergejj [24]

if the diameter of a circle is 15, its radius is half that or 7.5.

$\bf \textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=7.5 \end{cases} A=\pi (7.5)^2\implies A=56.25\pi \implies \stackrel{\pi =3.14}{A=176.625}$

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4(9+7) + 11 (5+7+9 +5)

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