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mina [271]
3 years ago
14

How much is 7/9 of 3/14?

Mathematics
2 answers:
mash [69]3 years ago
5 0
OF is another way to say times or divided by, so we have 7/9*3/14=21/126=1/6.
34kurt3 years ago
4 0
7/9 of 3/14 is 1/6.   

Tell me if I'm wrong.  

Hope this helps :)

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What’s 70.49 divided into 19
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Answer:

3.71

Step-by-step explanation:

just divide 70.49 and 19

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you are asked to draw a triangle with side lengths of 3 inches, 4 inches and 1 inch. how many triangles can you make like this??
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stiks02 [169]
The answer is D. 21 dollars is how much dawnie makes.

work: i = p x r x t


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t is the time involved, 3....year(s) time periods.

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A conical cup is made from a circular piece of paper with radius 10 cm by cutting out a sector and joining the edges as shown be
SVEN [57.7K]
Part a:

The opening of the cup is the circular base of the cup which has a circumference equal to the length of the arc formed by angle <span>θ = 9π/5 on the circular piece of paper from which the cone was made.

Thus, the circumference of the circle = Length of the arc formed by angle </span>θ = 9π/5 at the center which is given by
C=r\theta \\  \\ =10\times \frac{9\pi}{5}  \\  \\ =18\pi\approx56.55\ cm


Part b:
The opening of the cup is the circular base of the cup which has a circumference equal to the length of the arc formed by angle <span>θ = 9π/5 on the circular piece of paper from which the cone was made.

</span>Recall that the circumference of a circle is given by C=2\pi r and having obtained from part a that the circumference of the circular opening is 18\pi cm.

Thus,
2\pi r=18\pi \\  \\ \Rightarrow r=9\ cm


Part c:
The height of the cup can be obtained by noticing that the radius, height and the slant height of the cup forms a right triangle with the height and the radius as the legs and the slant height as the hypothenus.

Using pythagoras theorem, the height of the cup is obtained as follows:
h^2+r^2=l^2
where: h is the height, r is the radius and l is the slant height.

h^2+9^2=10^2 \\  \\ \Rightarrow h^2=100-81=19 \\  \\ \Rightarrow h= \sqrt{19} \approx4.36\ cm


Part d
Recall that the volume of a cone is given by V= \frac{1}{3} \pi r^2h

Thus, the volume of the cup is given by
V= \frac{1}{3} \pi\times9^2\times \sqrt{19}  \\  \\ \approx369.7\ cm^3
3 0
3 years ago
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