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spayn [35]
3 years ago
13

The diameter of a circle is 6 centimeters. What is the circle's area? Use 3.14 for pi

Mathematics
2 answers:
Lynna [10]3 years ago
7 0

Step-by-step explanation:

diameter=

2 \times\pi \times r = 6 \\ r =  \frac{6}{2 \times 3.14}  = 0.955 \\ area = \pi \times  {r}^{2}  = 3.14 \times  {0.955}^{2}  \\  =  2.87\:  {cm}^{2}

ELEN [110]3 years ago
5 0

Answer:

Diameter =>6cm

Radius =>6cm/2 =3cm

To find =>The area

Area =>πr²

Step-by-step explanation:

area =  > 3.14 \times 3 \times 3 \\ are a =  > 28.26cm {}^{2}

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Alex787 [66]

Answer:

The answer is 1/8 pints left

Step-by-step explanation:

If you had 3/4 pints already and you poured 5/8 pints into your glass, you would only have 1/8 pints left. First you need to make them both have the same denominator (8) to do that you need to multiply 3/4(2)=6/8. 6/8-5/8=1/8 pints left.

5 0
2 years ago
What is the volume of a cylinder with a radius of 10 meters and a height of 4 meters?
Licemer1 [7]

Answer:

The volume of the cylinder is about 1256.6 cubic meters.

Step-by-step explanation:

The volume of a cylinder is given by the formula:

\displaystyle V=\pi r^2h

Where <em>r</em> is the radius and <em>h</em> is the height.

Our radius is 10 meters and our height is four meters. Substitute:

\displaystyle V=\pi(10)^2(4)

Evaluate:

V=400\pi \text{ m}^3\approx 1256.6\text{ m}^3

Thus, the volume of the cylinder is about 1256.6 cubic meters.

3 0
3 years ago
- 4x + 3y +z, if x=-5, y=2 and z=0
Gala2k [10]
  • Answer:

<em>26</em>

  • Step-by-step explanation:

<em>- 4x + 3y + z =</em>

<em>= -4(-5) + 3(2) + 0</em>

<em>= 20 + 6 + 0</em>

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<em />

4 0
3 years ago
Read 2 more answers
A radar is designed to report the track of an aircraft every 2 seconds. If this radar reports 15 reports 15 tracks in one minute
meriva

Answer:

Step-by-step explanation:

Since radar reports 30 tracks in one minute in which 60 seconds makes 1 minute

Let calculate using this formula

Using this formula

Percentage of time=Tracks reported in minutes/60 seconds*100

Let plug in the formula

Percentage of time=30 tracks/60 seconds*100

Percentage of time=0.5*100

Percentage of time=50%

Inconclusion The percentage of the time that  radar track the aircraft is 50%

5 0
3 years ago
Read 2 more answers
If x = -6, which inequality is true?
igomit [66]

Answer:

C. 1 - 2x > 13

Step-by-step explanation:

you just substitute

8 0
3 years ago
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