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Tasya [4]
3 years ago
12

TUU SILICU.

Mathematics
2 answers:
givi [52]3 years ago
6 0

Answer:

r = 5 , V= 105

And for this case we want to find the height, if we solve for h from equation (1) we got:

h = \frac{3V}{\pi r^2}

And replacing we got:

h = \frac{3*105}{3.14 (5)^2} = 4.01

And then height would be given by:

h =4.01 units

Step-by-step explanation:

For this case we know that the volume for a cone is given by this formula:

V = \frac{\pi r^2 h}{3} (1)

And from the info given we have:

r = 5 , V= 105

And for this case we want to find the height, if we solve for h from equation (1) we got:

h = \frac{3V}{\pi r^2}

And replacing we got:

h = \frac{3*105}{3.14 (5)^2} = 4.01

And then height would be given by:

h =4.01 units

Shalnov [3]3 years ago
4 0

Answer:

4.013 units

Step-by-step explanation:

We know that the volume of a cone is given by the following equation:

v = pi / 3 * r ^ 2 * h

we need to know the height, therefore we solve for h:

h = 3 * v / (pi * r ^ 2)

replacing v = 105 and r = 5

h = 3 * 105 / (3.14 * 5 ^ 2)

h = 4.013

Which means that the height measures 4.013 units

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To add two fractions we have to make them have the same denominator, so we have to convert 2/5 to have a denominator of 15. To do this, we have to multiply 2/5 by 3 and then we can add the fractions:

\begin{gathered} \frac{8}{15}+\frac{2}{5} \\ \frac{8}{15}+\frac{2}{5}\cdot\frac{3}{3} \\ \frac{8}{15}+\frac{6}{15} \\ \frac{14}{15} \end{gathered}

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4 0
2 years ago
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erica [24]

Answer:

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Step-by-step explanation:

We need to find the area of this trapezoid.

The area of a trapezoid is denoted by:

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Here, we already know the lengths of the two bases; they are 0.9 metres and 2.3 metres. However, we need to find the length of the height.

Notice that one of the angles is marked 45 degrees. Let's draw a perpendicular line from top endpoint of the segment labelled 0.9 to the side labelled 2.3. We now have a 45-45-90 triangle with hypotenuse 2.0 metres. As one of such a triangle's properties, we can divide 2.0 by √2 to get the length of both legs:

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Thus, the height is h = 1.4 metres. Now plug all these values we know into the equation to find the area:

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A=\frac{(0.9+2.3)*1.4}{2}=2.2

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<em>~ an aesthetics lover</em>

8 0
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ser-zykov [4K]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

4 0
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