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
How to work it out and the
Lilit [14]
Heyyy friend


Here is your answer

7 0
3 years ago
Solve T=C(5+ AB) for B.
Vaselesa [24]

Answer:

b =  \frac{t - 5}{a}

Step-by-step explanation:

t = c(5 + ab)

Simplify:

t = 5c + abc

Move 5c to the other side:

t - 5c = abc

Divide bother sides with AC:

\frac{t - 5c}{ac}  =  \frac{abc}{ac}

Simplify:

\frac{t - 5}{a}  = b

If this answer helped you, give this answer a heart, rate it and if you could then please mark it brainliest. Thanks!

8 0
1 year ago
  A polygon that has all sides the same measure and all angles the same measure is called what?        A. Convex polygon   B. Co
Schach [20]
<span>D. Regular polygon.

</span>A polygon that has all sides the same measure and all angles the same measure is called Regular polygon.

Hoped I helped!
8 0
3 years ago
What is the area , in square meters of the shaded part of the rectangle below
Licemer1 [7]

Answer:

123.5 m^2

Step-by-step explanation:

The area of the whole rectangle is 9 x 19 = 171 m^2

The area of the region that isn't shaded is (5 x 19)/2 = 47.5 m^2 because the height of the triangle is 5 (9 - 4) and the area of a triangle is

(height x length)/2

171 - 47.5 = 123.5 m^2

4 0
3 years ago
Derivative of cos(4x)
son4ous [18]
D/dx ( cos (4x)) = - sin (4x) · d/dx ( 4x) = - 4 sin (4x) 
7 0
3 years ago
Other questions:
  • Juan drove 126 miles in 3 hours. If he continued at the same rate, how long would it
    15·3 answers
  • 5x4 – 3x² + 7x +x state the degree and leading coefficient of each polynomial​
    13·1 answer
  • I need help with this question
    5·1 answer
  • Randall bought 2 game controllers at Electronics Plus for $36. What is the unit rate for a game controller at Electronics Plus
    7·2 answers
  • According to the synthetic division below, which of the following statements are true? Check all that apply. 4 4)3 -13 12 3 0 O
    6·1 answer
  • This is the last questionn help
    10·1 answer
  • A student claims that the expression “9 times the sum of a number and 13" is translated to the algebraic expression 9n + 13. Is
    13·2 answers
  • Question 17. A circular flower bed has a diameter of 20 cm, what is the
    14·1 answer
  • Please say me the answer fast and correct.... ​
    8·1 answer
  • Find the domain and range.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!