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
Bess [88]
2 years ago
9

Yea yea you know i need help my brains tiny thank you for everything and everyone helping

Mathematics
2 answers:
Darina [25.2K]2 years ago
4 0

Answer: r=6

Step-by-step explanation:

<u>Step 1: Substitute for the known variables</u>

we know that the formula to find the volume of a cylinder is <u>V= πr²h</u>

π= 3.14

h= 12

r= ?

v=1,357

Plugging the numbers we know into the formula, we get:

1,357= 3.14xr²x12

1,357= 3.14x12xr² (because with the commutative property of multiplication you can multiply in any order)

1,357= 37.68 x r²

<u>Step 2: Get the variable term (the letter term) on the left</u>

37.68 x r²= 1,357

Now, divide by 37.68. (I know to divide because when you switch the 37.68x r² the other way around to  r²x37.68, you are clearly multiplying and must do the inverse operation (opposite of multiplication; division) to solve the problem.

So,

r²= 1357÷37.68

r²= 36.0138004 ----> about 36.

r²= 36

This equation isn't over yet because we still have the exponent on the r. Whenever you see a letter squared (to the power 2) in an equation, the "inverse operation" is to take the square root of both sides. Look:

r²= 36

The square root of  r² is just r, because r x r =  r²

The square root of 36 is 6, because 6x6=36.

Now we have :

r= 6

Step 3: Check

Now we have all the variables. To check to make sure the radius is correct, "plug in"

V= π r²h

1,357= 3.14x6²x12

1,357= 3.14x36x12

1,357= 113.04x12

1,357= 1356.48

They said in the question that the volume is APPROXIMATLEY 1357, so I can just round 1356.48 --> 1356.5---> 1357. Now I am sure that the radius is 6.

Hope this helps :)) also brainliest would be appreciated  :D

Anni [7]2 years ago
4 0
Answer r=6 I won’t put you through the reading
You might be interested in
Please help with picture below.
Bess [88]

Answer:

10.5 cm

Step-by-step explanation:

Since we know that O lies on AB we know that:

  1. The distance from the midpoint of OA to O is 6 cm (12/2).
  2. The distance from the midpoint of OB to O is 4.5 cm (9/2).

You can add 6 to 4.5 to get 10.5 cm.

7 0
3 years ago
How to find 2% of 3000 <br> without a calculator
wariber [46]

Answer:

60%

Step-by-step explanation:

7 0
2 years ago
Pls help me with 15-19 pls​
EleoNora [17]

Answer:

-4

Step-by-step explanation:

3 0
3 years ago
15. What might explain the concern female students expressed in the beginning of this lesson about the problem of assigning prac
yanalaym [24]

Answer:

Interestingly, the likelihood of a randomly chosen student being a female is <u><em>0.58</em></u> at this school.

Step-by-step explanation:

This school features more female students than male students. <em>Consequently, if resources are allocated equally (because it has been found that both female and male male students are similarly likely to be involved), the number of female students involved in after-school athletics programs is greater than the number of male students and could clarify the facilities issues.</em>

3 0
3 years ago
There are 80 sixth graders at Wilson Middle School only 50% of the sixth graders will attend the morning assembly.How many sixth
fredd [130]
40 Students

80 x .5 = 40
5 0
3 years ago
Other questions:
  • Which equations are correct? select each correct answer. 8x3(3x2)=24x6 4x3(6x2)=24x6 6b3(−2b3)=−12b6 3a3(−3a4)=−9a7?
    12·2 answers
  • Can you help me solve this
    9·2 answers
  • Select the factored form of the polynomial that is modeled by this geometric diagram.
    11·1 answer
  • What number is a factor of 8 but not a multiple of 4
    10·1 answer
  • Suppose that X is the number of hours that a computer is used in a computer lab on campus. The table below is the probability di
    11·1 answer
  • The graph of y=|x| is shifted down by 6 units and to the left by 9 units.
    9·1 answer
  • Please help me asap this is my math homework
    13·2 answers
  • A triangle has a leg of 8 and an angle of 16.5 what is the hypotenuse?
    9·1 answer
  • 14. (2a^4)^3 <br> what is the answer to this?
    11·2 answers
  • Find the area of triangle ABC Remember, the distance between two points is <img src="https://tex.z-dn.net/?f=d%3D%5Csqrt%28x_%7B
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!