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
tatyana61 [14]
3 years ago
10

A games shop sells marbles

Mathematics
1 answer:
Taya2010 [7]3 years ago
5 0
To start, the question is asking for surface area of a cylinder, meaning you will have to use this formula to find it: A=2πrh+2πr^2.

Since you already know that the diameter of the plastic cylinder is 4 marbles long, and each marble is 2 cm in diameter, you would multiply 4 and 2 to get that your diameter is 8 cm. However, since the surface area of a cylinder formula uses radius, you would simply divide 8 by 2 to get that the radius of the cylinder is 4 cm. 

Now, since you already know that the height of the cylinder is equal to 10 marbles, multiply the amount of marbles by 2 to get that the height of the cylinder is 20 cm. 

Now that you know the height and the diameter of the cylinder, plug the values into the formula: A=2π(4)(20)+2π(4)^2.
Assuming that pi is 3.14, simplify the equation as according to PEMDAS and you get that the area of plastic needed to make one cylinder is 602.88 cm squared
You might be interested in
F(x) = x + 1, find f(x+3)
Tom [10]

Answer:

Step-by-step explanation:

f(x) = x + 1, find f(x+3)

f(x+3) = x + 3 + 1 = x + 4

5 0
3 years ago
Read 2 more answers
Find the general solution of the given differential equation x2 y’ -2xy = x4 + 3
Contact [7]

\times 2 \: y \:  - 2xy =  \times 4 + 3 =  \times  -  \frac{3}{4}  \: y \: e \: r

5 0
2 years ago
I Need Help Pleaseeeee
kicyunya [14]
What is the question
3 0
3 years ago
Find the value of X <br><br> PLEASE
Oliga [24]

Answer:

x ≈ 18

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

<u>Trigonometry</u>

Law of Cosines: a^2 = b^2 + c^2 - 2(b)(c)cosA

  • a is a side length
  • b is a side length
  • c is a side length
  • A is an angle corresponding with side a

Step-by-step explanation:

<u>Step 1: Define</u>

a = x

A = 30°

b = 16

c = 30

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Substitute:                    x² = 16² + 30² - 2(16)(30)cos30°
  2. Exponents:                   x² = 256 + 900 -2(16)(30)cos30°
  3. Evaluate:                       x² = 256 + 900 -2(16)(30)(√3/2)
  4. Multiply:                        x² = 256 + 900 - 480√3
  5. Add:                              x² = 1156 - 480√3
  6. Subtract:                       x² = 324.616
  7. Isolate <em>x</em>:                       x = √324.616
  8. Evaluate:                       x = 18.0171
  9. Round:                          x ≈ 18
3 0
2 years ago
The number of feet y in a measure varies directly as the number of meters x. Write a direct variation equation that can be used
Verizon [17]

Answer:

Step-by-step explanation:

“y varies directly as x”

y = kx

Plug in (4, 1.25) and solve for k:

1.25 = 4k

k = 1.25/4 = 0.3125

The equation becomes

y = 0.3125x

4 0
2 years ago
Other questions:
  • 5208 divided by 4 in long division
    12·1 answer
  • Someone please help me with #28 and #30 I got myself super confused.
    10·1 answer
  • Audrey drew a model to determine how many eighths are in 5.
    5·2 answers
  • If it takes John 16.36 minutes to read one chapter how long will it take him to read nine chapters
    9·2 answers
  • 23 A racing car used 255 litres of fuel to complete a 340 km race. On average, how many litres of fuel did the car use every 100
    10·2 answers
  • use the angle diagram to solve for x and y. state the angle relationships used to write your equations. show all work when solvi
    11·2 answers
  • How much would $300 invested at 7% interest compounded continuously be
    7·1 answer
  • You own a car wash with 3 of your friends you total profit in the first month was $438. in two months, each of you had made a pr
    12·1 answer
  • A real estate agent earns about a 6% commission on each house sold. How
    14·2 answers
  • Will mark as brainliest
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!