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Svetlanka [38]
3 years ago
7

The volume of a cylinder is 471 cm? If the

Mathematics
1 answer:
Elena L [17]3 years ago
7 0

Answer:

Step-by-step explanation:

Formula for volume of a circle: V=πr²

If you multiply the circle by height, it becomes a cylinder.

Formula for volume of a cylinder: V=πr²h

Plug in the numbers and get r by itself:

471 = πr²(6)

Divide both sides by 6:

78.5 = πr²

Divide both sides by π:

25 = r²

Square root both sides:

\sqrt{25} = \sqrt{r} \\²

5 = r

Radius is 5 cm

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Evgen [1.6K]

$ 5 is taken is off the regular price

<em><u>Solution:</u></em>

Given that, Regular price of the soccer ball is $ 25

During the sale, it is 20 percent off

Let "x" be the amount that is taken off the regular price

Regular price = $ 25

Discount = 20 percent off

Which means, 20 % of regular price is taken off

x = 20 % of regular price

x = 20 % of 25

x = \frac{20}{100} \times 25\\\\x = 5

Thus $ 5 is taken is off the regular price

3 0
3 years ago
Please help no fake answers or links please
Tems11 [23]
D none of them fit the data set.
7 0
3 years ago
Read 2 more answers
(7i)(-4i)<br><br> a. -28i<br> b. 28<br> c. -28<br> d. -32i
levacccp [35]

Hey!

Explanation:

↓↓↓↓↓↓↓↓↓↓

First, remove parenthesis.

7i4i

Secondly, multiple by the numbers.

7*4=28

-28ii

Third, apply exponents rule.

-28i^2

i^2=-1

-28(-1)

Finally, refine.

=28\\

<u><em>Answer⇒⇒⇒⇒28</em></u>

Hope this helps!

Thank you for posting your question at here on Brainly.

Have a great day!

-Charlie

6 0
2 years ago
5/11x6/7 = 5/14.........................................
kozerog [31]
If it’s asking if it’s true of false it’s false
Because 5/11x6/7 =30/77
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2 years ago
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