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
oksian1 [2.3K]
3 years ago
7

A right cylinder has a radius of 3 and a height of 12. What is its surface area?

Mathematics
1 answer:
shepuryov [24]3 years ago
8 0

Answer:

Surface Area = 283

Step-by-step explanation:

Radius = 3

Height = 12

Formula for suface area is SA= 2πrh+2πr^2

let "r" be for radius

let "h" be for height

SA=2*π*3*12+2*π*3^2

SA=282.74

round to the nearest ones spot and that will make the surface area = 283

You might be interested in
How do u use pie in equation
yarga [219]
You normally use pie in equation that had the circumference or radius or diameter. !<span />
8 0
3 years ago
Read 2 more answers
For every 3 packages that Marcella wraps, she uses 12 of a roll of wrapping paper.
nikklg [1K]
For every 3 packages, she uses 1/2 a roll of wrapping paper

if she uses 2 1/2 rolls.....

(2 1/2) / (1/2) ....* 3
(5/2) / (1/2).....* 3
(5/2 * 2) * 3
5 * 3 =
15 packages <===
7 0
3 years ago
Solve 7x - 2(x + 1) = 6x + 14 <br><br> A) -12 <br><br> B) 12<br><br> C) -16<br><br> D) 16
anzhelika [568]
<span>7x - 2(x + 1) = 6x + 14 
</span><span>7x - 2x - 2 = 6x + 14 
5x - 2 = 6x + 14
6x - 5x = -2 - 14
         x = -16

answer
</span><span>C) -16</span>
3 0
3 years ago
If x and y are complementary angles, then y is a right angle.<br><br> right?
Nikitich [7]
Always because the sum of x and y is 180 degrees. If x and y are right angles, then x and y are supplementary angles. Never because the sum of x and y has to be 90 degrees. If x and y are complementary angles, then y is a right angle.
4 0
3 years ago
a 5-gallon mixture contains 40% acid. A 3-gallon mixture contains 50% acid. what percent acid is obtained by putting the two mix
natta225 [31]

so the 5 gallons ones is 40% acid, how much acid solute is in it anyway? well just 40% of 5 or namely 0.4*5 = 2 gallons.

the 3 gallons one is 50%, likewise it has 0.50 * 3 = 1.5 gallons of acid solute in it.

\begin{array}{lcccl} &\stackrel{solution}{quantity}&\stackrel{\textit{\% of }}{amount}&\stackrel{\textit{gallons of }}{amount}\\ \cline{2-4}&\\ \textit{1st mixture}&5&0.4&\stackrel{(5)(0.4)}{2}\\ \textit{2nd mixture}&3&0.5&\stackrel{(3)(0.5)}{1.5}\\ \cline{2-4}&\\ mixed&8&p&3.5 \end{array} \\\\\\ 8p=3.5\implies p=\cfrac{3.5}{8}\implies p=0.4375\implies p=\stackrel{\%}{43.75}

8 0
2 years ago
Other questions:
  • If the area of a circle is 254.34 in squared then what is the circumference of the circle
    11·1 answer
  • Find the distance between the points (0,-8) and (3,2). Round your answer to the nearest hundredth.
    8·1 answer
  • Solve for x:<br> 22x+11=4x-7
    6·2 answers
  • I’ve tried to work this out but I can’t get it figured out. Can someone help me
    11·1 answer
  • Answer and show work #36
    12·1 answer
  • P=2a+2b; P=56, a=12 solve for b
    13·1 answer
  • Need help ASAP! <br> Should be simple geometry but I’m brainless
    10·1 answer
  • 5.3, CD r- 8.8, and AD - 14.3, find AB to the nearest tenth.<br>If BC
    12·1 answer
  • Determine which line is perpendicular to y = - 7/5x-2.​
    9·1 answer
  • What is the product of 115 and 22?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!