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vampirchik [111]
3 years ago
12

Brainers, please help me out.

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
5 0

The answer is 1.2 <3

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A lab technician made a 14 cm diameter hole through the middle of a cylinder that has a diameter of 20 cm and a height of 28 cm.
Step2247 [10]

Answer:

The volume of the finished cylinder is 4486.2 m^3

Step-by-step explanation:

To find the volume of the finished cylinder, we have to first find the volume of the hole (with 14 cm diameter and a height of 28 cm) and subtract it from the volume of the original cylinder (with diameter of 20 cm and a height of 28 cm).

Note: The hole is also cylindrical in shape.

The volume of a cylinder is given as:

V = \pi r^2h

where r = radius, h = height

VOLUME OF THE HOLE

The diameter of the hole is 14 cm, hence, its radius is 7 cm (14 / 2 = 7)

Its volume is:

V = \pi *7^2 * 28\\V = 4310.3 m^3

VOLUME OF THE ORIGINAL CYLINDER

The diameter of the cylinder is 20 cm, hence, its radius is 10 cm (20 / 2 = 10)

Its volume is:

V = \pi *10^2 * 28\\V = 8796.5 m^3

Hence, the volume of the finished cylinder will be:

8796.5 - 4310.3 = 4486.2 m^3

The volume of the finished cylinder is 4486.2 m^3

8 0
2 years ago
Dory's grandma runs a chicken farm. The number of eggs her hens lay is given by the equation e = 3h, where e is the number of eg
Nadusha1986 [10]
Plug in 500 for h in the equation and you get:
e=3 (500)
e=1500
5 0
3 years ago
Read 2 more answers
The 25 coins in Danielle's piggy bank have a value of at least $1.44. The bank contains only nickels and dimes. What is the fewe
Tju [1.3M]
Should be 3 dimes at least.
6 0
2 years ago
Read 2 more answers
This thing is hard help me please I need to get a good grade
Greeley [361]

Step-by-step explanation:

2y=14

y=7

-2x-2(7)=-28

-2x=-28+14

-2x=-14

x=7

4 0
3 years ago
If the discriminant of a quadratic equation is 6, how many solutions does the equation have?
Dominik [7]
When discriminant >0, then it contrains 2 distinct real zeros.
Discriminant=6 and 6>0 so, you have 2 solutions.
6 0
2 years ago
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