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
wlad13 [49]
2 years ago
10

One link in a chain was made from a cylinder that has a radius of 2.5 cm and a height of 22 cm. How much plastic coating would b

e needed to coat the surface of the chain link? Use 3.14 for π.
251.2 cm2
314 cm2
345.4 cm2
471 cm2
Mathematics
2 answers:
bulgar [2K]2 years ago
7 0

Answer:

c) 345.4 cm²

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

                      = 345.4 cm²  

Step-by-step explanation:

<em>Given radius of the cylinder 'r' = 2.5 cm</em>

<em>Given Height of the cylinder 'h' = 22 cm</em>

<em>Area of the curved surface =  2 π r h </em>

<em>The plastic coating would be needed to coat the surface of the chain link</em>

<em>                   A =  2 π r h </em>

<em>                  A =  2 × 3.14 ×2.5×22 </em>

<em>                 A   = 345.4 cm²</em>

<u><em>Conclusion</em></u><em>:-</em>

<em>The  plastic coating would be needed to coat the surface of the chain link</em>

<em>                       = 345.4 cm²</em>

tamaranim1 [39]2 years ago
5 0

Answer:

C: 345.4 cm²

Step-by-step explanation:

You might be interested in
A motorist travels 275 km in 5 hours. How far con he travel in 9 hours at the some.
inessss [21]

Answer:

he can travel 495 km in 9 hr

distance covered in one hr = 275\5

55

distance covered in 9 hrs =495

3 0
2 years ago
Slope: 2<br> Point: (3,-5)
professor190 [17]
Where is the question? It’s 2(3)
5 0
3 years ago
In ΔMNO, m = 780 inches, o = 760 inches and ∠O=164°. Find all possible values of ∠M, to the nearest degree.
Mademuasel [1]

Answer:

So the answer is both

180 and 328 (but it may or may not show you "not possible, if so, then you got it right)

Step-by-step explanation:

SinA/a= SinB/b

1. SinM/780 = Sin164/760

2. 780sin164/760 = 0.2828909704

3. M = sin^-1 (0.2828909704)= 16.4328229 or 16

Check for possibility

180-16= 164

164 + 16= 180 (not possible)

164 + 164= 328 (not possible)

4 0
2 years ago
Read 2 more answers
Help me with question a please ! With full workings !
frosja888 [35]
A)


\bf \textit{distance between 2 points}\\ \quad \\&#10;\begin{array}{lllll}&#10;&x_1&y_1&x_2&y_2\\&#10;%  (a,b)&#10;Q&({{ 0}}\quad ,&{{ 2}})\quad &#10;%  (c,d)&#10;P&({{ 0.5}}\quad ,&{{ 0}})&#10;\end{array}\qquad &#10;%  distance value&#10;d = \sqrt{({{ x_2}}-{{ x_1}})^2 + ({{ y_2}}-{{ y_1}})^2}

\bf QP=\sqrt{(0.5-0)^2+(0-2)^2}\implies QP=\sqrt{0.5^2+2^2}&#10;\\\\\\&#10;QP=\sqrt{\left( \frac{1}{2} \right)^2+4}\implies QP=\sqrt{ \frac{1^2}{2^2}+4}\implies QP=\sqrt{\frac{1}{4}+4}&#10;\\\\\\&#10;QP=\sqrt{\frac{17}{4}}\implies QP=\cfrac{\sqrt{17}}{\sqrt{4}}\implies QP=\cfrac{\sqrt{17}}{2}

b)

since QR=QP, that means that QO is an angle bisector, and thus the segments it makes at the bottom of RO and OP, are also equal, thus RO=OP

thus, since the point P is 0.5 units away from the 0, point R is also 0.5 units away from 0 as well, however, is on the negative side, thus R (-0.5, 0)


c)

what's the equation of a line that passes through the points (-0.5, 0) and (0,2)?

\bf \begin{array}{lllll}&#10;&x_1&y_1&x_2&y_2\\&#10;%   (a,b)&#10;Q&({{ 0}}\quad ,&{{ 2}})\quad &#10;%   (c,d)&#10;R&({{ -0.5}}\quad ,&{{ 0}})&#10;\end{array}&#10;\\\\\\&#10;% slope  = m&#10;slope = {{ m}}= \cfrac{rise}{run} \implies &#10;\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{0-2}{-0.5-0}\implies \cfrac{-2}{-0.5}

\bf m=\cfrac{\frac{-2}{1}}{-\frac{1}{2}}\implies \cfrac{-2}{1}\cdot \cfrac{2}{-1}\implies 4&#10;\\\\\\&#10;% point-slope intercept&#10;y-{{ y_1}}={{ m}}(x-{{ x_1}})\implies y-2=4(x-0)\implies y=4x+2\\&#10;\left. \qquad   \right. \uparrow\\&#10;\textit{point-slope form}
7 0
3 years ago
__
guajiro [1.7K]

Answer:

1. 93/100

2. 8 21/100

3. 24/100= 6\50= 3/25

4. 57/100

5. 48/100 = 24/50= 12/25

6. 3 48/100= 3 12/25

7. 2.232323= 2232323/1000000

2 232323/1000000

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which answer is equal to i^58?<br> A) -i<br> B) -1<br> C) i<br> D) 1
    7·2 answers
  • Vicky had 12 cookies left over after the bake sale. She had sold 75 cookies in the morning and 40 cookies in the afternoon. How
    6·2 answers
  • f is a quadratic function whose graph is a parabola opening upward and has a vertex on the x-axis. The graph of the new function
    6·2 answers
  • PLEASE HELP If You Are not SURE please don't answer PLEASE show work and steps
    12·2 answers
  • Concrete workers are busy preparing to pour a rectangular patio on the rear of Miguel's new house. The workers have laid out, us
    14·1 answer
  • The slope of line (-1,1) (2,-5)?
    10·1 answer
  • Identify the tranfermatoin plz hury
    5·1 answer
  • Helppppppppppppppppp
    8·1 answer
  • Graph the line with the equation y= -2/5x -4<br><br><br>NEED ASAP PLS​
    11·1 answer
  • Two angles are supplementary. One angle measures 2x, and the other angle measures 3x - 15. Which equation can you use to find th
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!