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
blsea [12.9K]
3 years ago
14

a closed circular water tank in a subdivision is made up of concreate aluminum. its outer diameter is 8.4 m and its height is 12

m. if it is to be painted on the exterior, then how much total surface area is to be painted?
Mathematics
1 answer:
m_a_m_a [10]3 years ago
5 0

Answer:

122.7792 sq. m

Step-by-step explanation:

diameter= 8.4 m

therefore, radius = r = 4.2 m.......( as radius is 1/2 of diameter)

height = h= 12 m

only the exterior is to painted so the total surface area of the cylinder is taken,

total surface area of cylinder = 2π r( h+r)

=2* 3.14* 4.2*(12+4.2)

=122.7792 sq. m

You might be interested in
Given the coordinates below, what is the midpoint of AB?<br> A(-6, -10)<br> B(2,5)
madreJ [45]

Given :

\:

  • A(-6, -10)
  • B( 2, 5)

\:

\gray{ \frak{The \:  given \:  two \:   \: points  \: are(x_{1 },y_{1})=(−6 , -10)and(x_{ 2 },y_{2} )=( 2,5 )\:}}

\:

Let's solve by using midpoint formula :

\:

\bf \boxed{\color{red}\frak{Midpoint \:   \: Formula :  {( \: x ,\:y \:  ) = }(  \frak{ \frac{x_{1 } + y_{1}}{2} , \frac{x_{2 } + y_{2}}{2} )}}}

\:

\large \gray{ \frak{( \: x ,\:y \:  ) = }(  \frak{ \frac{ -6 + 2}{2} , \frac{ - 10 + 5}{2} )}}

\:

\: \large \gray{ \frak{( \: x ,\:y \:  ) = }(  \frak{ \frac{ -4}{2} , \frac{ - 5}{2} )}}

\:

\large \gray{ \frak{( \: x ,\:y \:  ) = }(  \frak{  \cancel\frac{ -4}{2} ,  \cancel\frac{ - 5}{2} )}}

\:  \:

\underline{ \boxed{ \large \red{ \frak{option \: d }(  \frak{   - 2, - 2.5)}}}}✓

Hope Helps! :)

6 0
2 years ago
PLEASE HELP ME
Kitty [74]

Answer:

C.

hope it help^_^(♡˙︶˙♡)

5 0
3 years ago
Write a linear equation that passes the point (2,-9) and has a slope of -5
Nezavi [6.7K]

Answer:

idk sorry

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
F
dimulka [17.4K]

Answer:

A. The length is 3

B. angel T

C. The perimeter is 20ft

Step-by-step explanation:

They are congruent so there side leghths are the same.

3 0
2 years ago
Find the slope of the line through the given points (9,2) and (7,8)
Kipish [7]
The velocity, slope, of a line is always (y2-y1)/(x2-x1), in this case:

slope=(8-2)/(7-9)=6/-2=-3

m=-3
3 0
3 years ago
Other questions:
  • Find the discriminant of the equation. (Show how you got your answer)<br> a. X^2 + 4x + 9 = 0
    8·1 answer
  • Write an equation in slope intercept form that passes through two points (-2,15) (9,18)
    9·1 answer
  • Zach has two savings accounts with a total of $9,000
    11·1 answer
  • For 120 consecutive days, a process engineer has measured the temperature of champagne bottles as they are made ready for servin
    15·1 answer
  • Suppose you had a population of fish whose lengths were normally distributed with a mean of 50 centimeters and a standard deviat
    11·1 answer
  • Please refer to the pictures below
    12·1 answer
  • A random sample of 30 households was selected as part of a study on electricity usage, and the number of kilowatt-hours (kWh) wa
    10·1 answer
  • If you have the option of choosing a loan that will accumulate 4%/ a interest compounded semi-annually compared to a loan that w
    10·1 answer
  • X+1=3 x-4=5 solve by equation method
    7·2 answers
  • Jamar drove 228 miles and used 6 gallons of gas.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!