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lys-0071 [83]
3 years ago
8

How many sides does a cylinder have

Mathematics
2 answers:
Karo-lina-s [1.5K]3 years ago
6 0
Correct, it has 2 sides.
ValentinkaMS [17]3 years ago
5 0
<span>Hi, A cylinder has 3 faces - 2 circle ones and a rectangle</span>
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The two triangles are similar.<br><br> What is the value of x?
denpristay [2]
[8/(2x-2)=(8+6)/(3x)
 8/(2x-2)=14/(3x)
 14(2x-2)=8(3x)
 28x-28=24x
x=7
So by using the similarity of the sides, we can make ratios that can give is the value of x.<span />
3 0
3 years ago
What is the area of a circle whose equation is (x-3)² + (y + 1) ² =81?
kupik [55]
Okay, first, given the equation, we need to find out what the radius of the circle is. Let us state the general equation of a circle: 

\frac{(x-x_{1})^2}{r^2}+ \frac{(y-y_{1})_^2}{r^2}=1

Where (x_{1}, y_{1}) is the centre of the circle. In this case, we don't need to know the centre. Just the radius. 

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\frac{(x-3)^2}{81}+ \frac{(y+1)^2}{81}=1

Great! We now know the radius of the circle. It is \sqrt{81} because it is the bottom fraction. Now we know that the radius is 9. 

So now lets input this into the area of circle formula: 

A=πr^2 

Now we insert our radius. 

A=9^2π 

=A=81π 

You can convert that into a decimal if you wish. 

Hope this helped!

~Cam943, Moderator
4 0
3 years ago
How to find Surface Area &amp; Volume of Cylinder???<br> please help......
AlladinOne [14]

Answer:

A cylinder's volume is π r² h, and its surface area is 2π r h + 2π r².

7 0
3 years ago
Read 2 more answers
Please help me asap​
tresset_1 [31]

Answer:

1\2.

Step-by-step explanation:

change in y over change in x. so 13 - 11 over 6 - 2. 2/4 --.> 1\2.

6 0
3 years ago
If e || f and a || b, what is the value of y. *
Blizzard [7]

Answer:

y = 90

Step-by-step explanation:

Since, e || f and a || b

Therefore, quadrilateral so formed is a rectangle.

Each angle of a rectangle is right angle.

\therefore \: y \degree = 90 \degree \\  \\  \huge \red{ \boxed{ \therefore \: y  = 90}}  \\  \\

3 0
3 years ago
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