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DiKsa [7]
3 years ago
15

PLS HELP! I NEED TO FIND THE SURFACE AREA OF THIS CYLINDER!

Mathematics
2 answers:
netineya [11]3 years ago
6 0

Answer:

1187.52

Step-by-step explanation:

Use the formula 2\pi rh+2\pi r^{2}.

r= 7 (half of your diameter, which is 14)

h = 20

Fill in your radius and height.

2\pi (7)(20)+2\pi (7^{2})

Enter your equation into a calculator and you'll get 1187.52202.

When rounded to the nearest hundredths, you get 1187.52

Contact [7]3 years ago
3 0

Exact Surface Area = 378pi

Approximate Surface Area = 1186.92

The approximate surface area uses pi = 3.14

The units are cm^2 or "square cm".

=========================================================

Work Shown:

SA = surface area of cylinder

SA = 2*pi*r^2 + 2*pi*r*h

SA = 2*pi*7^2 + 2*pi*7*20

SA = 2*pi*49 + 2*pi*140

SA = 2*49*pi + 2*140*pi

SA = 98pi + 280pi

SA = 378pi ..... exact surface area

SA = 378*3.14

SA = 1186.92 ..... approximate surface area

----------

Side note: The diameter 14 cuts in half to get the radius r = 7

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A positive integer is twice another.the sum of the reciprocal of the two positive integer is 3/14. Find the integers
icang [17]

Answer:

\huge\boxed{14\ \text{and}\ 7}

Step-by-step explanation:

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8 0
3 years ago
Consider the following functions. f=[(-1,1),(1,-2),(3,-4) and g=[(5,0),(-3,4),(1,1),(-4,1)} Find (f-g)(1) =
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<h3>How to find the difference between the functions?</h3>

For two functions f(x) and g(x), the difference is defined as:

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brainly.com/question/17431959

#SPJ1

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Helppp me i neeed help
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6 0
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