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
laiz [17]
3 years ago
15

Find the surface area of a cylinder

Mathematics
2 answers:
IceJOKER [234]3 years ago
6 0
A = 2•3.14•3•8 + 2•3.14•3^2 = 207.34512
castortr0y [4]3 years ago
3 0

Answer:

Surface area = 207.24 in²

Step-by-step explanation:

Remember to always convert the diameter into a radius.

D = 6 in (divide it by two to get the radius) R = 3 in

Radius = 3 in

Formula:

SA = 2\pirh + 2\pir²

Solution:

SA = 2\pirh + 2\pir²

SA = 2(3.14)(3)(8) + 2(3.14)(3)

SA = 2(3.14)(3)(8) + 2(3.14)(9)

SA = 150.72 + 56.52

SA = 207.24 in²

You might be interested in
Classify the triangle.<br> obtuse<br> equiangular<br> right<br> acute
CaHeK987 [17]

Answer:

acute triangle

Step-by-step explanation:

We have 3 angles that are not equal to each other

They are all smaller than 90 degrees which means they are acute angles

3 0
2 years ago
Read 2 more answers
HELPPPPP!!!!!! ASAPPPPPP!!!!!! TIMEDDDD!!!!
padilas [110]

Answer:

C(2,5)

Step-by-step explanation:

2(2)+3(5)>12

4+15>12

19>12

x-y>1

2-5>1

3>1

6 0
2 years ago
Read 2 more answers
which statements about the system are true? check all that apply. y = x – 4 3y – x = –7 the system has one solution. the system
Dmitrij [34]
The slope of the first equation has a slope of one and a y intercept of -4. The second equation has a y intercept of -2.3333 as seen when plugging in 0 for x, so the same y-intercept and same line are out of the question. This means either they have the same slope and thus are parallel or intersect at some point. A simple way to find out? Plug in 1 for x on the second. If it isn't -1.33333, which is a slope of positive 1 such as in the first equation, they WILL INTERSECT somewhere. When plugging in 1, we get
 3y - 1 = -7
3y = -6
y = -2
(1, -2) is the next point after (0, -2.3333)
That means it is most certainly not the same slope, and thus they will intersect at some point. The two slopes are 1/1 and 1/3 if you weren't aware.
8 0
3 years ago
Read 2 more answers
A cylindrical container has a radius of 3 centimeters and a height of 12 centimeters. The container is filled with water up to t
evablogger [386]

Answer:

volume of empty space = 141.3 cm³

Step-by-step explanation:

volume of empty space = volume of the cylinder - volume of water

First, we need to calculate the volume of the container

volume of a cylinder = πr²h

 where r = radius of the container   and   h is the height of the container

r = 3cm  and h = 12 cm    π is a constant which is ≈ 3.14

volume of a cylinder = πr²h

                                  =3.14 × 3²×12

                                   =3.14×9×12

                                    =339.12 cm³

We will proceed to find the volume of water

since liquid will take the shape of its container,

then volume of water =  πr²h

r is the radius of the container   and    h is the height of the water

r = 3cm    and   h = 7cm      

volume of water =  πr²h

                             = 3.14 ×3²×7

                              =3.14×9×7

                              =197.82 cm³

volume of empty space = volume of the cylinder - volume of water

                                          =339.12 cm³    -    197.82 cm³

                                          = 141.3 cm³

OR

WE CAN SOLVE DIRECTLY

height of empty space = height of container - height of water

                                       = 12 - 7

                                        =5 cm

volume of empty space = πr²h

                                        =3.14×3²×5

                                        =3.14×9×5

                                         =141.3 cm³

volume of empty space = 141.3 cm³

4 0
3 years ago
Greg has decreased his running time by 1/10 minute each of the last six weeks. Write an expression to represent the total change
Nastasia [14]

x is your starting running time. 1/10 of a minute is 6 seconds, so you can do x - 6(6). 6 times 6 = 36, so your answer is x - 36 seconds. 36 seconds.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Y=2x-5 -3x - 4y=-2
    12·1 answer
  • I need help on this
    11·1 answer
  • A family wants to purchase a house that costs $185,000 . They plan to take out a $135,000 mortgage on the house and put $50,000
    14·2 answers
  • Solve each equation by graphing the related function. if the equation has no real-number solution, write no solution. 3x^2=0
    10·2 answers
  • Help me with this probability question for (7th grade math)​
    14·2 answers
  • The sum of the measures of angles for a triangle is 180°. Find the value of x and then the measures of the 3 angles
    6·1 answer
  • Mr. Samson has two kinds of fruit in his basket. The ratio
    14·2 answers
  • I need help for all of them please!
    12·1 answer
  • Robert bought a house with a 6 percent interest rate. Three months later, the rate dropped to 4.35 percent. Robert was frustrate
    14·1 answer
  • In how many unique ways can the seven letters in the word MINIMUM be arranged, if all the letters are used each time
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!