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fomenos
3 years ago
14

What is ∛2197? Explain how you got your answer.

Mathematics
2 answers:
user100 [1]3 years ago
5 0

Answer:

13

Step-by-step explanation:

We need to write our answer in exponential form. Ask yourself the question, "What times itself 3 times will give you 2197?" Your answer is 13^{3}. This will go inside of your cube root. You now have \sqrt[3]{13^{3} }. Since there's a power of 3 and a cube root, those cancel each other out, and your answer is 13.

ZanzabumX [31]3 years ago
4 0

Answer:

\boxed{13}

Step-by-step explanation:

=> \sqrt[3]{2197}

<u><em>Factorizing 2197 gives 13 * 13 * 13</em></u>

=> \sqrt[3]{13*13*13}

=> \sqrt[3]{13^3}

We know that \sqrt[3]{} = ^{1/3}

=> 13^{3 * 1/3}

=> 13^1

=> 13

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3 years ago
The volume of a right circular cone is 2,279.64 in cubed. If the height of the cone is 18 in, what is the diameter of the cone?
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ANSWER

A. 22 in

EXPLANATION

The volume of a cone is calculated using the formula:

Volume =  \frac{1}{3}  \times \pi {r}^{2} h

It was given that: the volume is 2,279.64 in³

The height of the cylinder is also given as: h=18 in.

We substitute, the given values into the formula to get:

2279.64=  \frac{1}{3}  \times (3.14) \times {r}^{2}  \times 18

2279.64= 18.84 {r}^{2}

{r}^{2}  =  \frac{2279.64}{18.84}

{r}^{2}  = 121

We take positive square root to get;

r =  \sqrt{121}

r = 11in

Therefore the diameter is 2(11) which is equal to 22 inches.

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