answer.
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
liubo4ka [24]
2 years ago
11

One link in a chain was made from a cylinder that has a radius of 2 cm and a height of 20 cm. How much plastic coating would be

needed to coat the surface of the chain link? Use 3.14 for π. a chain link made from a cylinder that has been bent so that its ends are connected, creating a continuous loop A. 251.2cm2 B. 314 cm2 C. 345.4 cm2 D. 471 cm2

Mathematics
2 answers:
Gelneren [198K]2 years ago
6 0

Answer:

A. 251.2cm2

Step-by-step explanation:

Given radius of the cylinder 'r' = 2 cm

Given Height of the cylinder 'h' = 20 cm

Area of the curved surface =  2 π r h

The plastic coating would be needed to coat the surface of the chain link

                 A =  2 π r h

                A =  2 × 3.14 ×2×20

               A   = 251.2 cm²

Conclusion:-

The  plastic coating would be needed to coat the surface of the chain link

                     = 251.2 cm²

svp [43]2 years ago
6 0

Answer:

the answer is A

Step-by-step explanation:

You might be interested in
At the rate of $2.00 per square foot the cost of painting the rectangular board with a semicircular top shown in the figure is $
Elenna [48]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.
<span> 
it consists of a rectangle, dimensions  L = 4ft and W = 3ft = Ar = 4ft x 3ft = 12 ft^2

</span>then, you have one half of the area of the circle that has diameter  R = 3ft - radius will be r = 1.5ft the area of that half will be:

Ac = r^2 \pi/ 2
= (1.5 ft)^2 x 3.14 / 2
= 2.25 ft^2 x 3.4/2 
= 7.065 ft^2/ 2 
= 3.5325ft^2

A = Ar + Ac
A = 12ft^2 + 3.5325ft^2
A = 15.5325ft^2

<span>At the rate of $2 per square foot, the cost will be: 
$ 15.5325*2 = 31.07 </span>
5 0
2 years ago
Read 2 more answers
What is the y-intercept of the function y = negative one-half cosine (three-halves x)?
Jet001 [13]
A. Sorry if I’m wrong
3 0
2 years ago
Read 2 more answers
Emily and a friend bought two tickets to see a soccer game. Each ticket cost $8.25. The friends paid a total of $24.50, which in
solniwko [45]
2\cdot8.25=16.5\\\\24.5-16.5=8\\\\8:2=4\\\\\frac{4}{8.25}\cdot100\%=\\\\\frac{400}{8.25}\%=\\\\48.48\%
6 0
2 years ago
Over the last 50 years, the average temperature has increased by 2.5 degrees worldwide (I made this up). What is the rate of cha
Dovator [93]
50 years ... 2.5 degrees
1 year ... x degrees = ?

If you would like to know what is the rate of change in worldwide temperatures per year, you can calculate this using the following steps:

50 * x = 2.5 * 1
50 * x = 2.5      /50
x = 2.5 / 50
x = 0.05 degrees per year

Result: The rate of change is 0.05 degrees per year.
6 0
2 years ago
Question 1: Classify the system of equations and identify the number of solutions. 3 = 4x + y 2y = 6 − 8x Answers: inconsistent;
Mariana [72]

Answer:

1st: consistent and dependent

2nd: (-2,0). Simply put the called and check.

7 0
2 years ago
Other questions:
  • " 7. Mr Gerry’s class has 19 students Ms Vernon’s class has 21 students and Mr Singh’s class has 23 students Whose class has a c
    5·1 answer
  • Frans filing cabinet is 6 feet tall 1 1/3 feet wide and 3 feet deep. She plans to paint all sides except the bottom of the cabin
    14·1 answer
  • The farthest distance a satellite signal can directly reach is the length of the segment tangent to the curve of Earth's surface
    10·1 answer
  • 2. Determine the value of x for which r ∥ s if m∠1 = 20 – 8x; and m∠2 = 30 – 16x.
    15·1 answer
  • A rare first-edition book is currently priced at $200. After one year, the price of the book is anticipated to be 1.15 times the
    15·2 answers
  • Dan is watching The Birds in his backyard. Of the birds he watches, 9. Of them,or 45%, are sparrows. How many birds are in his b
    9·1 answer
  • Zinc roofing weighs 1.6 pounds per square foot. Jose wants to order 357.85 square feet of roofing. Before ordering, he calculate
    8·2 answers
  • 1-i need to mix 25% mineral spirits to the varnish i am using what ratio of spirit to varnish am i using? 2-if i use 240 ml of v
    11·1 answer
  • The average mass of 9 boys is 50 kg. what is their total mass​
    15·1 answer
  • Malik's arts and crafts shop have a bolt of crimson velvet 32 meters long. A customer came in during the morning and bought 120
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!