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Nostrana [21]
2 years ago
9

What is the surface area of a cylinder with base radius 4 and height 7?

Mathematics
2 answers:
blsea [12.9K]2 years ago
8 0
276.46 is the surface area of the cylinder 
Sav [38]2 years ago
7 0
\bf \textit{total surface area of a cylinder}\\\\
S=2\pi r(h+r)~~
\begin{cases}
r=radius\\
h=height\\
-----\\
r=4\\
h=7
\end{cases}\implies S=2\pi (4)(7+4)
\\\\\\
S=8\pi (11)\implies S=88\pi
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Whoops i forgot to read the lesson :P 30 points
andriy [413]

Step-by-step explanation:

I'll do 2.

Alright,Alex let say we have factored a quadratic into two binomial, for example

(5x + 3)(6x - 4)

If we set both of those equal to zero

(5x + 3)(6x + 4) = 0

We can used the zero product property in this case to find the roots of the quadratic equation.

This means that

if  \: ab = 0 \: then \: a = 0 \: and \: b = 0

This means we set each binomal equal to zero to find it root.

5x + 3 = 0

5x =  - 3

x =  -  \frac{3}{5}

6x + 4 = 0

6x =  - 4

x =  -  \frac{2}{3}

So our roots are negative 3/5 and negative 2/3 using zero product property

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2 years ago
What are the x-coordinates of the solutions to this system of equations?
Vikentia [17]
X equals 4 because 2 times 2 equals 4 and then 4 times 4 =16
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2 years ago
Factor the difference of the perfect square. If the binomial will not factor, write prime.
KATRIN_1 [288]
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3 0
3 years ago
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This one is a doozy for me, need help please
Maksim231197 [3]

Answer:

The correct answer is B

Step-by-step explanation:

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4 0
2 years ago
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What is the measure of angle 4?<br> angles 1,3,5,6,7, and 8 are 73 degrees. angles 2 is 107 degrees
uranmaximum [27]

Answer:

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Step-by-step explanation:

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3 0
2 years ago
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