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
nika2105 [10]
3 years ago
5

A storage tank will have a circular base of radius r and a height of r. The tank can be either cylindrical or hemispherical​ (ha

lf a​ sphere). Complete parts​ (a) through​ (e) below. a. Write and simplify an expression for the ratio of the volume of the hemispherical tank to its surface area​ (including the​ base). For a​ sphere, Vequals four thirds pi r cubed and SAequals 4 pi r squared . What is the volume of the hemispherical tank​ (including the​ base)? Vequals nothing ​(Simplify your answer. Type an exact answer in terms of pi ​.)
Mathematics
1 answer:
Neko [114]3 years ago
6 0

Answer:

Volume: \frac{2}{3}\pi r^3

Ratio: \frac{2}{9}r

Step-by-step explanation:

First of all, we need to find the volume of the hemispherical tank.

The volume of a sphere is given by:

V=\frac{4}{3}\pi r^3

where

r is the radius of the sphere

V is the volume

Here, we have a hemispherical tank: a hemisphere is exactly a sphere cut in a half, so its volume is half that of the sphere:

V'=\frac{V}{2}=\frac{\frac{4}{3}\pi r^3}{2}=\frac{2}{3}\pi r^3

Now we want to find the ratio between the volume of the hemisphere and its surface area.

The surface area of a sphere is

A=4 \pi r^2

For a hemisphere, the area of the curved part of the surface is therefore half of this value, so 2\pi r^2. Moreover, we have to add the surface of the base, which is \pi r^2. So the total surface area of the hemispherical tank is

A'=2\pi r^2 + \pi r^2 = 3 \pi r^2

Therefore, the ratio betwen the volume and the surface area of the hemisphere is

\frac{V'}{A'}=\frac{\frac{2}{3}\pi r^3}{3\pi r^2}=\frac{2}{9}r

You might be interested in
Some one help me with my bro’s hw
Liula [17]

Answer:

<em>475604-71343= 404357</em>

<em>hope</em><em> </em><em>this</em><em> </em><em>helps</em><em><</em><em>3</em>

4 0
2 years ago
Read 2 more answers
Y = -2, 3y-4 evaluate it please​
Luba_88 [7]
the answer is -10 you just multiply 3 times -2 and then subract 4
7 0
3 years ago
In order to solve for the variable in the equation 2 (x + 3) + 5 x = 3 (2 x minus 1), Jaleesa begins by applying the distributiv
avanturin [10]

Answer: 7 x + 6 = 6 x minus 3

Step-by-step explanation:

  1. 2 (x + 3) + 5 x = 3 (2 x minus 1)
  2. Now you distribute.
  3. 2(x) + 2(3) = 2x+6
  4. And 3(2x) minus 3(1) = 6x minus 3
  5. 2x+6+5x = 6x minus 3
  6. Then combine like terms
  7. 2x +5x=7x and there are no other like terms on either side of the equation.
  8. 7x+6= 6x minus 3

8 0
3 years ago
Read 2 more answers
An entrepreneur estimates that the total profit (profit = total revenue minus total cost) from his proposed company will be give
SOVA2 [1]
No profit means P(x)=0: x³-4x²+3x-12=0
factor by regrouping: x²(x-4)+3(x-4)=0
take out (x-4): (x-4)(x²+3)=0
x=4 or x²=-3
x² is not a negative number, so x=4 is the only answer. 
4 0
3 years ago
Read 2 more answers
Fill in the missing term on each line. Simplify any fractions.
e-lub [12.9K]

Answer:

Step-by-step explanation:

4t + 11 = 19

Subtract 11 from both sides

4t = 19 - 11

4t = 8

Divide both sides by 4

t = 8/4

t = 2

7 0
1 year ago
Other questions:
  • If the width of the painting is 68 centimeters, what is its length?
    15·1 answer
  • What times what gives me 234 and what plus what gives me 31
    11·1 answer
  • A gumball machine contains equal numbers of red, yellow, green, and blue gumballs. It randomly gives out one gumball for each pu
    11·1 answer
  • Each swing that Susan builds requires $10 in hardware and $20 in wood. She uses the expression 10 + 20 to represent the total co
    8·1 answer
  • 7. y = 2x² + 3 function not function ?
    10·1 answer
  • If each unit is equivalent to 1 square inch, how many square inches of matting are used? A. 32 sq. Inches B. 36 square inches C.
    5·1 answer
  • PLS PLS ILL GIVE U BRAINLIST AND ALL THE POINT SPLS HELP ME OUT!!! HASS TO BE RIGHT ASAP PLS
    6·1 answer
  • If f(x) = 3/x + 2 - x-3, complete the following statement ( round your answer to the nearest hundredth):
    8·2 answers
  • Any help please? Having a hard time
    12·2 answers
  • How to do this friends ???
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!