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
miv72 [106K]
3 years ago
6

The height of a right cylinder is r , where r is the radius. Write a function f in simplest form that represents the ratio of th

e volume to the surface area.
Mathematics
1 answer:
IrinaVladis [17]3 years ago
7 0

Answer:

  f(r) = r/4

Step-by-step explanation:

The volume formula for a cylinder is ...

  V = πr^2·h

The total surface area of a cylinder is ...

  A = 2πr^2 +2πrh

Then the ratio of volume to surface area is ...

  V/A = (πr^2·h)/(2πr(r+h)) = rh/(2(r+h))

__

In this problem, we have h = r, so the ratio becomes ...

  V/A = r·r/(2(r+r)) = r/4

As a function of r, this is ...

  f(r) = r/4

You might be interested in
Evaluate k(x) = -k - 7 when k(-4)
FinnZ [79.3K]

Answer:

I'm not sure but i think that it's

x= -7

Hope this helps

8 0
2 years ago
How many triangles can be constructed with angles measuring 35º, 62º, and 83º?
ladessa [460]
B)OPTION B only 1 is your answer.
6 0
3 years ago
Which of the following is an example of a variable expense?
olganol [36]

Answer:

Step-by-step explanation:

Rent, wages and car insurance don't vary much.  Grocery expenses depend upon the particular groceries purchased each time one goes to the grocery store, and are least likely to be steady / constant from week to week.

3 0
3 years ago
. The formula for the area A of a trapezoid is
cupoosta [38]

Answer:

h=A/(b1+b2/2)

Step-by-step explanation:

it is the reverse

8 0
3 years ago
Rose wants to buy a toy that costs $14. If she gives the cashier $20, which equation will tell you how much change Rose gets bac
irga5000 [103]

Answer:

$20-$14=$6

Step-by-step explanation:

this is correct because if you give the $20 to them and the toy costs $14 then you subtract that from the amount you gave them then whatever is left is how much you get back.

brainliest?

4 0
3 years ago
Other questions:
  • Metal Fabrication If an open box is made from a tin sheet 10 in. square by cutting out identical squares from each corner and be
    8·1 answer
  • What is 871 rounded to the nearest ten
    11·1 answer
  • I need help click for the screenshot
    7·2 answers
  • Find the surface area of the prism.
    6·1 answer
  • Pls help me with this problem
    6·2 answers
  • Draw an annotated diagram and explain the meaning of the expression (especially the missing number) in terms of the situation. 1
    5·2 answers
  • Find the mean, median mode(s), range, standard deviation, and variance of the data: 21, 15, 16, 25, 13, 18 5, 3, 2, 6, 5, 2, 5 E
    14·1 answer
  • A.)61<br> B.)49<br> C.)17<br> D.)7
    5·2 answers
  • Find the range of the relation.
    13·1 answer
  • Help me with Math. <br><br> What should be the slope intercept form if m = 8 and b = 6?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!