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solmaris [256]
3 years ago
13

The volume of a metal cylindrical rod is 126 cubic meters. ​The radius is 6 m. ​ ​What is the height of the rod in millimeters?

​ ​Use 3.14 as an approximation for π. ​Round your answer to the nearest millimeter.
Mathematics
2 answers:
Dahasolnce [82]3 years ago
8 0

Answer:

1.11 mm

Step-by-step explanation:

The height of a cylinder can be found using the formula: h=V/(πr^2)

This formula was found by taking the formula for the volume of a cylinder and solving for h, or height. Knowing that V is 126 and the radius is 6, we can plug in our known variables in order to solve for h.

Kamila [148]3 years ago
8 0

Answer:

7000 mm

Step-by-step explanation:

Volume of the cylindrical rod = 126 m^3

Radius of the cylindrical rod= 6m

π = 3.14 (approximately)

Required: h(in mm)

Volume of a cylinder = πr^2h

126 m^3 = (6)^2 * h

or

h= 126/ (6)^2= 126/ 36= 6.6868m* 1000= 6686.8mm

Therefore, the height of the cylinder is 7000 mm to its closest approximation.

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23 + 8m + 4n - 5m - 27​
mylen [45]

Answer:

-4 + 3m + 4n

Step-by-step explanation:

In this question, you are combining like terms, meaning doing equations to numbers that fit with only each other.

<u>So we should start on the number without variables:</u>

23 and 27

<u>Match them up together and you should find your first equation:</u>

23 - 7

==> -4

So we should have  -4  +  8m  +  4n  -  5m

Now we should combine the numbers with the variable of m:

8m and 5m

<u>Match them up together and you should find your first equation:</u>

<u></u>

8m - 5m

==> 3m

So we should now have -4  + 3m  + 4n

<u></u>

<u>Since there are no other variables of n, we are all done:</u>

<u>-4  + 3m  + 4n  is  your  final  answer </u>

4 0
3 years ago
Focus on number two ok
melomori [17]
Its simple, convert 1 and 2/3 into a fraction which is 5/3 and use KCF which is Keep Change and Flip,

How this works is that you keep the first fraction, then change the division sign to a multiplication sign (Change = change the sign into its oppisite) then flip the other fraction from being 5/3 into 3/5. And then you multiply top times top and bottom times bottom. After that you simplify if you can, Hope this helped!
7 0
2 years ago
Read 2 more answers
Tickets for a family of 6 to go skiing cost $48. whats the unit price ?
Molodets [167]
The unit price would be $8.

48/6 = 8
4 0
2 years ago
To make a fruit salad for a party, Chris
Sloan [31]

Answer:

$33.81

Step-by-step explanation:

2.49*3 = 7.47 dollars for 3 pounds of strawberries

3.19*2 = 6.38 dollars for 2 pounds of blueberries

4.99*4 = 19.96 dollars for 4 pounds of pineapple

7.47 + 6.38 + 19.96 = 33.81 dollars spent in total

4 0
2 years ago
What is the greatest common factor of 14 56 63?
olga55 [171]
14: 1 × 14
      2 × 7

56: 1 × 56
      2 × 28
      4 × 14
      7 × 8

63: 1 × 63
      3 × 21
      7 × 9
GCF(14, 56, 63) = 7
6 0
3 years ago
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