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
dusya [7]
3 years ago
7

What is the volume of this cylinder?

Mathematics
2 answers:
Leviafan [203]3 years ago
6 0
V cylinder = pi * r^2 * h
V = 3.14 * 5^2 * 8
V = 3.14 * 25 * 8
V = 628 ft^3
nikdorinn [45]3 years ago
6 0
The formula of the volume of a cylinder is:
pie × r squared × h

hence substitute radius(r) and height(h) into the formula

3.14 × 5 squared × 8
= 3.14 x 25 x 8
= 628 cubic feet

-

hope this helps! :)))
You might be interested in
Classify each conic section and write its equations in standard form. Show work.
svp [43]

Answer:

The conic is ellipse of equation (x - 1)²/22 + (y + 4)²/44 = 1

Step-by-step explanation:

* Lets revise how to identify the type of the conic  

- Rewrite the equation in the general form,  

 Ax² + Bxy + Cy² + Dx + Ey + F = 0  

- Identify the values of A and C from the general form.  

- If A and C are nonzero, have the same sign, and are not equal  

 to each other, then the graph is an ellipse.  

- If A and C are equal and nonzero and have the same sign, then  

 the graph is a circle  

- If A and C are nonzero and have opposite signs, and are not equal  

then the graph is a hyperbola.  

- If either A or C is zero, then the graph is a parabola  

* Now lets solve the problem

The equation is 4x² + 2y² - 8x + 16y - 52 = 0

∴ A = 4 and C = 2 ⇒ same sign and different values

∴ The equation is ellipse

* The standard form of the ellipse is

  (x - h)²/a² + (y - k)²/b² = 1

- Lets try to make this form from the general form

- Group terms that contain the same variable, and move the

  constant to the opposite side of the equation

∴ (4x² - 8x) + (2y² + 16y) = 52

- Factorize the coefficients of the squared terms

∴ 4(x² - 2x) + 2(y² + 8y) = 52

- Complete the square for x and y

# To make completing square

- Divide the coefficient  of x (or y) by 2 and then square the answer

- Add and subtract this square number and form the bracket of

 the completing the square

# 2 ÷ 2 = 1 ⇒ (1)² = 1 ⇒ add and subtract 1

∴ 4[(x² - 2x + 1) - 1] = 4(x² - 2x + 1) - 4

- Rewrite as perfect squares ⇒ 4(x -1)² - 4

# 8 ÷ 2 = 4 ⇒ (4)² = 16 ⇒ add and subtract 16

∴ 2[(y² + 8y + 16) - 16] = 2(y² + 8y + 16)² - 32

- Rewrite as perfect squares ⇒ 2(y + 4)² - 32

∴ 4(x - 1)² - 4 + 2(y + 4)² - 32 = 52

∴ 4(x - 1)² - 4 + 2(y + 4)² = 32 + 4 + 52

∴ 4(x - 1)² + 2(y + 4)² = 88 ⇒ divide all terms by 88

∴ (x - 1)²/22 + (y + 4)²/44 = 1

8 0
2 years ago
Don buys 6 kiwis for 3$ what would a customer have to pay for 9 kiwis
kirill [66]

Answer:

It will cost $4.50 for 9 kiwis

Step-by-step explanation:

Lets find the cost per kiwi

$3 / 6 kiwis

.50 per kiwi

Now we have 9 kiwis

$.50 (9)

$4.50

It will cost $4.50 for 9 kiwis

3 0
3 years ago
Read 2 more answers
3m=5(m+3)-3 what is m equal to?
elena-s [515]

3m=5m+15-3

3m-5m=12

- 2m=12

m=-6

<h2><u>Mark as Brainliest</u></h2>

4 0
3 years ago
Read 2 more answers
You are taking a​ multiple-choice test that has 8 questions. each of the questions has 5 answer​ choices, with one correct answe
Murrr4er [49]
5^8 = 390625 ways tp d
8 0
3 years ago
Factorise completely 12xy - 3x^2​
LUCKY_DIMON [66]

Step-by-step explanation:

We need to factorise 3x

2

−12xy

Here we can take 3x common.

Thus we have 3x

2

−12xy=3x(x−4y)

Hence, factors are 3x,(x−4y).

4 0
3 years ago
Read 2 more answers
Other questions:
  • David will spend at most $39 on gifts. So far, he has spent $22. What are the possible additional amounts he will spend? Use c f
    14·1 answer
  • An equilateral triangle LMQ is drawn
    10·1 answer
  • Which software can I use to produce Mathematical Images and shapes?
    15·2 answers
  • Please help me with this homework
    9·1 answer
  • Domain for the function f(x)= 1/x^2-5x+25
    13·1 answer
  • . In a volleyball game, Alexis scored 4 points more than twice the
    10·1 answer
  • 14 in. = _____ ft<br> Plzzzzzzzzzzzz help
    8·2 answers
  • What is the answer to y=2/3(6)+10
    14·1 answer
  • What is the least common multiple of 10 and 15?
    11·2 answers
  • Solve
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!