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In-s [12.5K]
3 years ago
5

A cylindrical cup is 10 centimeters in height. When filled to the very top, it holds 500 cubic centimeters of water. What is the

radius of the cup, rounded to the nearest cm? (The volume of a cylinder is V=\pi r^2hV=πr 2 h where r is the radius, h is the height, and V is the volume)
Mathematics
1 answer:
Vladimir [108]3 years ago
6 0

Answer:

4

Step-by-step explanation:

the formula for radius is

r=\sqrt{\frac{v}{\pi h } }

so. 500 divided by pi times 10. then square root your final answer. cool. let's get started.

3.14*10 is 31.4, you can do that without thinking.

500/31.4=15.92

\sqrt{}15.92= 3.99, or just 4

the radius is four.

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finlep [7]
<span>Krystal's rate = 1 floor in 16 min. = 1/16 floors per min.

Working together their rate = 1 floor in 5.76 min. = 1/5.76 floors per min.

We need to determine Perry's rate, so we need to equate their combined rate with the sum of the individual rates.

Let Perry's time = x

In equation form, we can write:
1/16 + 1/x = 1/5.76
Solve for x:

(x+16)/16x = 1/5.76 -> 5.76(x+16) = 16x -> 10.24x = 92.16 -> x = 9

So, Perry would take 9 mins. to do the floor alone.

I hope this helped!
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8 0
3 years ago
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If you could write out the whole problem exactly how it is, I can solve it for you.
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Irina-Kira [14]

Answer:

a.  $ \frac{\textbf{17}}{\textbf{4}} $

b.  $ \frac{\textbf{3}}{\textbf{8}} $

Step-by-step explanation:

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A mixed fraction of the form $ a\frac{x}{y} = a + \frac{x}{y} $

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b. $ \textbf{2} \hspace{1mm} \textbf{-} \hspace{1mm} \textbf{1}\frac{\textbf{5}}{\textbf{8}} $

A mixed fraction of the form $ -c\frac{a}{b} = - c - \frac{a}{b} $

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Hence, the answer.

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Answer:

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Step-by-step explanation:

We can easily solve this proble by applying a rule of three

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