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
noname [10]
3 years ago
11

C= π\2 what is area i'm confused

Mathematics
1 answer:
Svetlanka [38]3 years ago
8 0
C=2πr=π/2
2πr=π/2
4πr=π
r=π/4π=1/4

A=πr^2=(1/4)^2*π=1/16*π
You might be interested in
Sid lives 3 miles north and 8 miles west of school. What is the direct distance from Sid's house to school?
OLEGan [10]
A because 3+8=11miles direct
3 0
4 years ago
Read 2 more answers
Simplify<br> x^2(y^3)^4/xy^5=x^a•y^b
givi [52]

Answer: a = 1 b = 7

Step-by-step explanation:

x^2(y^3)^4/x.y^5 = x^a.y^b

x^2(y^12) = x^a.y^b

(x^2).(y^12)/x^y^5 = x.y^7

x.y^7= x^a . y^b -> <u>x^1.y^7</u>

7 0
3 years ago
Find center,foci, and vertices of ellipse (x+3)^2/21+(y-5)^2/25=1
sasho [114]
I don't know if we can find the foci of this ellipse, but we can find the centre and the vertices. First of all, let us state the standard equation of an ellipse. 

(If there is a way to solve for the foci of this ellipse, please let me know! I am learning this stuff currently.) 

\frac{(x-x_{1})^2}{a^2}+ \frac{(y-y_{1})^2}{b^2}=1

Where (x_{1},y_{1}) is the centre of the ellipse. Just by looking at your equation right away, we can tell that the centre of the ellipse is: 

(-3,5)

Now to find the vertices, we must first remember that the vertices of an ellipse are on the major axis. 

The major axis in this case is that of the y-axis. In other words, 

b^2>a^2 

So we know that b=5 from your equation given. The vertices are 5 away from the centre, so we find that the vertices of your ellipse are: 

(-3,10)
 & (-3,0)

I really hope this helped you! (Partially because I spent a lot of time on this lol) 

Sincerely,

~Cam943, Junior Moderator
6 0
4 years ago
A tree cast a shadow 21 meters long
Delicious77 [7]

Step-by-step explanation:

I do not understand .____.

5 0
3 years ago
Quart cartons of milk should contain at least 32 ounces. A sample of 22 cartons was taken and amount of milk in ounces was recor
victus00 [196]

Answer:

32 oz

Step-by-step explanation:

5 0
4 years ago
Other questions:
  • I need help with these 2 questions.
    13·1 answer
  • What is the answer to 8(c-5)
    8·2 answers
  • The work of a student trying to solve the equation 4(2x − 1) = 11 + 3x + 5 is shown below: Step 1: 4(2x − 1) = 11 + 3x + 5 Step
    11·1 answer
  • Express 5 as a fraction. <br><br> A) 1/5 <br> B) 30/6 <br> C) 42/6 <br> D) 5/5
    8·2 answers
  • The Volunteer Club raked leaves at several senior citizens’ homes in the neighborhood. If each group of three students could rem
    6·1 answer
  • SurveyMonkey is a popular website for hosting online surveys and from time to time they will also create surveys based on a subj
    14·1 answer
  • Mrs.Cochran made chocolate fudge brownies during vacation. She took 4/12 of the brownies to school to share with the teachers. A
    5·1 answer
  • What is the quotient of 1,078 and 14
    9·1 answer
  • The following are the temperatures of 10 days in winter in °C. − 3 , 0 , 10 , 2 , 8 , − 5 , − 1 , 9 , 2 , − 3 Work out the mean
    6·1 answer
  • John has two apples, he gives Jane 251. How many apples does John have? Please help 2nd grade is so hard.
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!