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
Dahasolnce [82]
4 years ago
8

A right cylinder has a radius of 3 and a height of 12. What is its surface area?

Mathematics
1 answer:
Len [333]4 years ago
3 0

Answer:

90π units²

Step-by-step explanation:

(refer to attached)

Total Surface are off a right cylinder = area of its ends + area of curved surface

Given radius, r = 3 units and height, h = 12 units

Area of 2 ends,

= Area of 2 circles

= 2 x πr²

= 2π (3²)

= 2π (9)

=18π units²

Area of curved surface,

= 2πrh

= 2π(3)(12)

= 72π units²

Hence,

Surface area = 18π + 72π = 90π units²

You might be interested in
A kilobyte is 2^10 bytes and a megabyte is 2^20 bytes. How many kilobytes are in a megabyte?
yawa3891 [41]

Megabyte is equal to 1 million bytes, while kilobyte is equal to 1000 bytes.

Divide 1,000,000 with 1,000

1000000/1000 = 1000

There are 1000 kilobytes in 1 megabyte.

hope this helps

8 0
3 years ago
Ruby wants to estimate the height of a streetlamp post on her block. She stands a certain
ira [324]

Answer: The height of street  would be 3.26 feet.

Step-by-step explanation:

Since we have given that

Angle of elevation = 71°

Distance traveled = 12 feet

Angle of elevation becomes 46°.

So, the height of the street lamp post would be

h=\dfrac{d}{\cot 46^\circ-\cot 71^\circ}\\\\h=\dfrac{12}{0.965-0.344}\\\\h=\dfrac{12}{0.620}\\\\h=3.26\ feet

Hence, the height of street  would be 3.26 feet.

6 0
3 years ago
Simplify.<br> 7./162 +2/98
Jet001 [13]

Answer:

505            

 ———— = 0.06362  

 7938

Step-by-step explanation:

5 0
4 years ago
In order to win her race, Millie doubles her running speed every minute. If she starts out running at 2 miles per hour, how fast
Law Incorporation [45]

Answer:

use speed distance and time mdthof

4 0
2 years ago
Read 2 more answers
(01.02 LC)Which of the following describes a function of a satellite? Helps scientists track weather Measures latitude and longi
Lana71 [14]

Answer:

A. Helps scientists track weather

Step-by-step explanation:

Have you seen those weather guys on TV showing clouds and stuff, they got them via satellite or at least if there are animations, those are possible because they can see what the clouds or other stuff look like via satellites.

4 0
3 years ago
Other questions:
  • How many kilometers per hour would you have been travling over the limit if you had covered the distance of 10 kilometers in 6 m
    8·1 answer
  • One quart or one liter? Which is greater?
    6·2 answers
  • PLEASE HURRY WILL MARK BRAINLIST
    6·2 answers
  • Help meee.. its due today!!
    15·2 answers
  • A hyena can run one over four of a mile in 22.5 seconds. At this rate, which equation can be used to determine how fast a hyena
    7·2 answers
  • Given that standard deviation and mean of a data set for 20
    8·1 answer
  • Which of the following expressions are equivalent to this expression
    13·1 answer
  • Complete the table below to find solutions to the linear equation 4x + y = -40.
    6·1 answer
  • BRAINLIST IF U DO IT!!!!!!!!!!!!!!!!!!
    15·2 answers
  • Find the geometric mean between 18 and 7. Write your answer in radical form.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!