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Lostsunrise [7]
3 years ago
13

Find the surface are of the cylinder in terms of pi

Mathematics
1 answer:
Andrej [43]3 years ago
7 0
Hello!

To find the surface area of a cylinder you use the equation

SA = 2 \pi rh + 2 \pi  r^{2}

SA is surface area
r is radius
h is height

PUt in the values you know

SA = 2 \pi (7)(18) + 2 \pi  * 7^{2}

Square the number

SA = 2 \pi (7)(18) + 2 \pi * 49

Multiply 7 and 18

SA = 2 \pi * 126 + 2 \pi  * 49

Multiply 126 by 2

SA = 252 \pi  + 2 \pi  * 49

Multiply the 49 by 2

SA = 252 \pi  + 98 \pi

Add

SA = 350 \pi

The answer is A)350 \pi cm^{2}

Hope this helps!
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Can u answer an explain how to get the answer im stuck plz
vesna_86 [32]
You would do 5(9)=3x
Then get 45=3x
Divide both sides by 3
Get 15 for the answer
7 0
3 years ago
What is the volume of the figure below, which is composed of two cubes with side lengths of 5 units?
Nadya [2.5K]

Answer:

250u³

Step-by-step explanation:

The volume of a cube is found by multiplying LxWxH. 5x5x5=125, 125x2=250

Hope this helped :)

8 0
3 years ago
Which of the following expressions is equivalent to 4(m – 16)?
Masteriza [31]

Answer:

4m - 64

Step-by-step explanation:

Solve 4(m - 16)

4(m - 16) = 4 x m - 16 x 4

= 4m - 64

3 0
3 years ago
Factor 28+56t+28w28+56t+28w28, plus, 56, t, plus, 28, w to identify the equivalent expressions. Choose 2 answers:
Effectus [21]

Answer: The factorization of  28+56t+28w =28(1+2t+w)

The factors of 28+56t+28w are 28 and 1+2t+w.

Step-by-step explanation:

The given expression : 28+56t+28w

To factorize it, we need to find the common factor.

As 56 can be written as 2 x 28.

So, the above expression would become

28+2\times28t+28w

Now, taking 28 as common from all the terms, we will get

28(1+2t+w)

Thus, the factorization of  28+56t+28w =28(1+2t+w)

And the factors of  28+56t+28w are 28 and 1+2t+w.

6 0
3 years ago
X+y=5 <br> 3x-4y=8 <br> please i need the steps
grandymaker [24]

Answer:

x + y = 5

<u>3x - 4y = 8</u><u> </u><u> </u><u> </u>

3x + 3y = 15

<u>3x - 4y = 8 </u>-

7y = 7

y = 1

x + y = 5

x + 1 = 5

x = 4

x = 4

y = 1

Hope it helps!

6 0
2 years ago
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