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
grin007 [14]
2 years ago
15

Work out the surface area of this cylinder radius 2cm and height 4cm pls help​

Mathematics
1 answer:
Alex2 years ago
6 0

Step-by-step explanation:

surface area of cylinder is

2×pi×r (h+r)

2×22/7×2 (4+2)

88/7 (4+2)

75.4 cm square

You might be interested in
How do I do this? please detail steps.
vladimir2022 [97]
Define
{x} =   \left[\begin{array}{ccc}x_{1}\\x_{2}\end{array}\right]

Then
x₁ = cos(t) x₁(0) + sin(t) x₂(0)
x₂ = -sin(t) x₁(0) + cos(t) x₂(0)

Differentiate to obtain
x₁' = -sin(t) x₁(0) + cos(t) x₂(0)
x₂' = -cos(t) x₁(0) - sin(t) x₂(0)

That is,
\dot{x} =   \left[\begin{array}{ccc}-sin(t)&cos(t)\\-cos(t)&-sin(t)\end{array}\right] x(0)

Note that
\left[\begin{array}{ccc}0&1\\-1&09\end{array}\right]   \left[\begin{array}{ccc}cos(t)&sin(t)\\-sin(t)&cos(t)\end{array}\right] =  \left[\begin{array}{ccc}-sin(t)&cos(t)\\-cos(t)&-sin(t)\end{array}\right]

Therefore
x(t) =   \left[\begin{array}{ccc}0&1\\-1&0\end{array}\right] x(t)

7 0
3 years ago
Two wheels rolled simultaneously. The radius of the smaller wheel is r feet and the radius of the larger wheel is 2r feet If bot
Mnenie [13.5K]
The smaller wheel rolled
.. 4*2πr = 8πr . . . . feet

The larger wheel rolled
.. 4*2π*2r = 16πr . . feet

The larger wheel traveled (16πr -8πr) = 8πr feet farther than the small wheel.
6 0
3 years ago
. Asking 100 students at a large university for their opinions on campus life is an example of measuring a _____.
Slav-nsk [51]

Answer:

B

Step-by-step explanation:

I am assuming that the university has much more than 100 students so 100 people is just a small sample.

3 0
2 years ago
Read 2 more answers
A snowstorm began on Monday evening. It snowed steadily until 6:00 am on Tuesday morning when the snow was 12 inches deep. Kevin
poizon [28]

Answer:

what is expected at 7am is 15 inches deep snow but what we have is 12 inches deep snow. The equation has failed in its prediction.

Step-by-step explanation:

In this question, we are asked to calculate if the prediction made by an equation modeled is correct.

Firstly let’s look at the equation in question;

y = 3t - 6

where y is the snow depth and t is the number of hours after midnight.

now we are looking at 7am, that’s 7 hours past 12am, meaning 7 hours after midnight.

let’s plug the value of t as 7 into the equation

y = 3(7) - 6

y = 21-6

y = 15 inches

according to the equation by Kevin, what is expected is 15 inches deep snow but what we have is 12 inches deep snow. The equation has failed in its prediction.

3 0
3 years ago
Jamie Earns 10% commission on her sales after she has sold a minimum of $2000 each month for the lippy cosmetics company, last m
Licemer1 [7]
I'm sorry but I do not understand your question. It is not specified what you are looking for.
7 0
3 years ago
Other questions:
  • In order to construct the interior point of ∠CAB for the angle bisector, where should you place the compass point?
    13·1 answer
  • I don't not understand substation for this problem y=x+6 then y=2x-7
    11·1 answer
  • Please answer both questions
    9·1 answer
  • The area of a triangle garden can
    6·1 answer
  • A triangle has a square on its three sides as shown below. What is the value of x
    6·2 answers
  • 13. Mr. Robinson is growing carrots in planters that has a width of 4 1/2
    8·1 answer
  • What is the length of the segment XY?
    8·1 answer
  • The teacher could buy the shirt online 3.50 each she would also pay a fee of 9.50 for shipping the shirts.
    12·2 answers
  • The total surface area of a cube is 1350sqcm find volume?​
    8·1 answer
  • Write and solve this expression:<br> Subtract 4 from 19, then divide by 3
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!