3 years ago

Simplify. 3 square root of -27n^27 A. 3n^3 B. -3n^3 C. -3n^9

2 answers:

8 0

The answer will be: $\sqrt[3]{-27*n^{27} } = -3 n^{9}$

7 0

$\sqrt[3]{-27n^{27}}= \sqrt[3]{(-3)^3}*\sqrt[3]{(n^9)^3}=-3n^9$

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vampirchik [111]

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Step-by-step explanation:

The total surface area of a cone is given by :

$A=\pi rl+\pi r^2\\\\=\pi r(l+r)$

Put r = 2r and l = 2l in the above formula

$A=\pi \times 2r(2l+2r)\\\\A=2\pi r(2l+2r)\\\\=2\pi r \times 2(l+r)\\\\=4\pi r(l+r)$

Hence, the total surface area of the cone is $4\pi r(l+r)$ .

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