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
Mariana [72]
3 years ago
9

Calculate the area of a circle with radius of 2 cm

Mathematics
2 answers:
Volgvan3 years ago
7 0
Area= π × r²
<span>
π  = 3.14</span>
3.14 x 2²
<span>3.14 x 4 
</span>
Area ≈ 12.56
Mariulka [41]3 years ago
6 0
A = pi × r²

3.14 x 2²

3.14 x 4 

A = 12.56636 ≈ 12.56
 
hopefully this helps u and if u know the formula to solve it, it is super easy

You might be interested in
What is the equation of the line in slope-intercept form?
Paladinen [302]

Answer:

y = 5/2 x + 5.

Step-by-step explanation:

Y = mx + c is the slope-intercept form where m = slope and c = the y-intercept.

For this graph  m = 5/2 and c = 5.

5 0
4 years ago
Whats the answer and why
IRISSAK [1]
Apply the Pythagorean Theorem here.  

Square the lengths of the 2 shorter sides:  (20 mi)^2 and (40 mi)^2.  Correct results are 400 and 1600.  Combine these:  obtain 2000.

Then the length of the diagonal (which is the distance between the 2 cities) is
sqrt(2000) = sqrt(400)*sqrt(5) = 20 sqrt(5)    (answer)
4 0
4 years ago
(06.02) A linear function that represents the number of animals adopted from the shelter is compared to a different linear funct
irga5000 [103]

Answer:

1) These linear functions must not describe a pair of parallel lines.

2) Any intersection of two lines determines a point.

Step-by-step explanation:

Hi there!

Well, since no further details were given. Let's call the linear function that represents the number of animals adopted from the shelter s(x). And

the hours the volunteers work at the shelter each week v(x)

1) These linear functions must not describe a pair of parallel lines.

If these lines intersect, then their slope must be different.

m_{s}\neq m_{v}\\e.g.\\m_{s}=2\\m_{v}=-2

Equal slopes, parallel lines. Parallel lines, no intersection.

Different slopes, then there is an intersection at some point.

2) Any intersection of two lines determines a point. Let's find it.

So to find one common point equalize the two functions, then find the value for the x-coordinate. Plug it in one of the functions, e.g.

2x+2=-2x+2 \rightarrow 4x=0 \therefore x=0\\2(0)+2=2 \Rightarrow (0,2)

At the common point, both functions after inserted the same value in the Domain (x) return the same result for their respective  Range set.

3 0
3 years ago
Seventy weather balloons were sent up. Twenty-eight were found. What percent wer ound? 17​
In-s [12.5K]

Step-by-step explanation:

let the percent of found balloons be x

given,

total number of balloons= 70

number of found balloons= 28

according to the question,

x% of 70= 28

x/100 × 70 = 28

x=40

hence 40% of the balloons were found

5 0
3 years ago
Which are steps in the process of completing the square used to solve the equation 3 – 4x = 5x2 – 14x? Check all that apply.
Bond [772]

Answer:

1. 3 = 5x2 – 10x

2. 8 = 5(x2 – 2x + 1)

3. StartFraction 8 Over 5 EndFraction = (x – 1)2

Step-by-step explanation:

3-4x=5x^2-14x

3=5x^2-14x+4x

3=5x^2-10x

5x^2-10x-3=0

1. 3 = 5x2 – 10x

2. 8 = 5(x2 – 2x + 1)

8=5x^2-10x+5

8-5=5x^2-10x

3=5x^2-10x

3. StartFraction 8 Over 5 EndFraction = (x – 1)2

8/5=x^2-2x+1

Cross product

8=5(x^2-2x+1)

8=5x^2-10x+5

8-5=5x^2-10x

3=5x^2-10x

7 0
3 years ago
Read 2 more answers
Other questions:
  • A software designer is mapping the streets for a new racing game. All of the streets are depicted as either perpendicular or par
    9·1 answer
  • A cube-shaped item needs to be painted. The item’s edge length is 2 centimeters.
    5·1 answer
  • Lurinda ordered some boxes of greeting cards online the cost of the cards is $6.50n+$3where n is the number of boxes ordered and
    8·1 answer
  • 0.14 as a fraction reduced to lowest terms
    11·1 answer
  • I really need help with this since I have a math test tomorrow, I'd really appreciate it if someone could help.
    9·1 answer
  • What is 1/4 + 3/7? please explain how to solve it.
    13·1 answer
  • PLEASE HELP I AM ABOUT TO FAIL.
    14·1 answer
  • Sarah investment in stock grew 22% to $427.how much did she invest?
    11·1 answer
  • Solve: 7x-12&lt; 7( x-1)
    7·1 answer
  • ABC is isosceles AC=20 and BC= 3x-7
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!