1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
melisa1 [442]
2 years ago
11

What is the surface area of a right cylinder which has a base with radius 9 units and has a height of 12 units?

Mathematics
2 answers:
Dmitriy789 [7]2 years ago
8 0

Answer:

1187.52

Step-by-step explanation:

A=2πrh+2πr2=2·π·9·12+2·π·92≈1187.52202

Evgesh-ka [11]2 years ago
6 0

Answer:

1187.997

Step-by-step explanation:

surface area =2πrh+2πr^2

(2•22/7•9•12)+(2•22/7•9^2)

44/7(108)+44/7(81)

6.285(108)+6.285(81)

678.857+509.14

1187.997

You might be interested in
The height of one square pyramid is 12 m. A similar pyramid has a height of 6 m. The volume of the larger pyramid is 400 m3. Det
valentinak56 [21]
A) <span>Scale factor of the smaller pyramid to the larger pyramid in simplest form:
</span>6 m / 12 m = 1/2 

b) <span>Ratio of the areas of the bases of the smaller pyramid to the larger pyramid:
</span><span>(1/2)^2 = 1/4 </span>

c) <span>Ratio of the volume of the smaller pyramid to the larger:
</span><span>(1/2)^3 = 1/8 </span>

d) <span>Volume of the smaller pyramid:
</span>(1/8) * 400 m^3 = 50 m^3
4 0
3 years ago
If sinX= 0.9, what is the value of cos X?<br><br> Round the value to the nearest thousandth.
SSSSS [86.1K]

Answer: sqrt(19)/10

Step-by-step explanation:

sinx=0.9

x=arcsin(0.9)


Insert x for cos(x):

cos(arcsin(0.9)=

Use identify cos(arcsin(x))=\sqrt{1-x^{2} }, so

\sqrt{1-(\frac{9}{10})^{2}} =\sqrt{\frac{19}{100} } =\frac{\sqrt{19}}{10}


Sorry if this is confusing.



6 0
3 years ago
Which property is 5+ a = a + 5 ?
zheka24 [161]

Answer:

commutative \: property \: of \: addition \\ thank \: you

6 0
2 years ago
A line intersects the points (-14,-10) and (7,5). find the slope of the line and simplify
Tpy6a [65]
The slope of any line can be calculated using the following rule:
slope = (y2-y1) / (x2-x1)

The given points are (-14,-10) and (7,5), therefore:
y2 = 5
y1 = -10
x2 = 7
x1 = -14

Substitute with these values to get the value of the slope as follows:
slope = (5--10) / (7--14) = 5/7
5 0
3 years ago
I don't know how to do math lol​
Nimfa-mama [501]

9514 1404 393

Answer:

  (d)  9

Step-by-step explanation:

The relation you're supposed to apply here is ...

  an exterior angle of a triangle is equal to the sum of the remote interior angles.

__

The exterior angle is 17x+7, and it is equal to the sum of the two marked angles inside the triangle.

  17x +7 = 13x +3 +40

  4x = 36 . . . . . . . . . . . . . subtract 13x+7 from both sides

  x = 9 . . . . . . . . . divide both sides by 4

3 0
2 years ago
Read 2 more answers
Other questions:
  • Lobachevsky's Negation created spherical geometry.<br>O A. True<br>O B. False​
    6·2 answers
  • It takes one examiner 36 hours to mark 70 exam papers. How long would it take 6 examiners to mark 70 papers?
    5·1 answer
  • Solve 5√3 as the square root of a single number​
    9·1 answer
  • Vertex (-2,2) point (-4,-10)
    13·1 answer
  • A pail has a capacity 4 times that of a glass.
    6·1 answer
  • Find the slope. Explain what the slope and y-intercept means for the situation. Be sure to use your labels when explaining the r
    15·1 answer
  • Which answer is not a scientific notation.
    6·1 answer
  • Write an equation for the line that passes through the given point<br> 1. (4,-1), (0.5)
    9·1 answer
  • 9 cm<br> 7 cm<br> 7 cm 9cm<br> 9 cm
    10·1 answer
  • magan wants to ride his bicycle 30.4 miles this week. he has already ridden 4 miles if he rides for 4 more days what is the aver
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!