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
Liono4ka [1.6K]
2 years ago
11

The circumference of a circle is 25π cm. What is the area, in square centimeters? Express your answer in terms of \piπ.

Mathematics
2 answers:
creativ13 [48]2 years ago
5 0

Answer:

A = 156.25 pi  cm^2

Step-by-step explanation:

The circumference of a circle is given by

C = 2 * pi *r

25 pi = 2 * pi *r

Divide each side by 2 pi

25 pi/2 pi  = 2 pi r / 2 pi

12.5 = r

We can find the area by

A = pi r^2

A = pi ( 12.5) ^2

A = 156.25 pi  cm^2

marissa [1.9K]2 years ago
4 0
Other guy is correct
You might be interested in
Describe in words how to graph the line y=3
Luden [163]
You should have put a picture so ppl would know what the question is askin
7 0
2 years ago
Read 2 more answers
Please help me out plz
9966 [12]
Point slope formula is y= mx+b. To find the slope, or m, you need to find the "rise over run". rise = y coordinates, run = x coordinates. And the slope equation is y1-y2/x1-x2. So let's say the first point is (x1,y1) and the second is (x2,y2). that would be 35-(-31)/5-(-6)= 66/11 or 6/1 aka up six, across one. That is your slope. So far you have y=6x+b, next plug (5,35) into that equation and solve for b (aka the y intercept). So: 35=6(5)+b. 35-30=b, b=5. So your final equation is y=6x+5.
8 0
3 years ago
You need a 15% acid solution for a certain test, but your supplier only ships 5% solution and 17.5% solution. If you need 20 lit
Nimfa-mama [501]

Answer:

4 liters of 5% and 16 liters of 17.5%

Step-by-step explanation:

Let quantity of 5% be x liters and of 17.5% be y liters

x+y=20 hence y=20-x

Introducing percentages

0.05x+0.175(20-x)=0.15*20

0.05x+3.5-0.175x=3

-0.125x=-0.5

x=\frac {-0.5}{-0.125}=4

Therefore, y=20-x=20-4=16

You need 4 liters of 5% and 16 liters of 17.5% to achieve 20 liters of 15% acid solution

6 0
2 years ago
Read 2 more answers
In a pre algebra class containing 40 students, there are 18 freshmen, 19 sophomores, and 3 juniors. What fraction of the class a
dezoksy [38]

\frac{9}{20} of the class consists of freshmen.

Step-by-step explanation:

Given,

Total number of students = 40

Number of freshmen = 18

Number of sophomores = 19

Number of juniors = 3

Fraction of freshmen = \frac{Number\ of\ freshmen}{Total\ number\ of students}

Fraction of freshmen = \frac{18}{40}

Fraction of freshmen = \frac{9}{20}

\frac{9}{20} of the class consists of freshmen.

Keywords: fraction, division

Learn more about fractions at:

  • brainly.com/question/10712420
  • brainly.com/question/10744457

#LearnwithBrainly

7 0
3 years ago
Kevin bicycles a total of 2,340 miles last year. On average, about how many miles did he bike each week? 195 45 44 46
svlad2 [7]

In order to find the average you have to add up all the data values and then find the sum of the data values.

195 + 45 + 44 + 46 = 330\\\frac{330}{4} = 82.5\\\\

So on average he ran about 82.5 miles.

7 0
3 years ago
Other questions:
  • Which is a nonrigid transformation of f(x)?
    12·1 answer
  • Determine which number is a solution of the equation. q divide 8 = 56
    15·1 answer
  • The price of one gallon of milk has increased from $3.24 to $4.05. What is the percentage increase?
    12·1 answer
  • A line passes through (-1, 7) and (2,10) which equation is the equation of the line? -x y=12 -x y=8 -3x y=16 -3x y=4
    9·1 answer
  • Help me pleaseeeeeeeeeeeeeeeeeeeee
    7·1 answer
  • Can someone help me please?
    8·1 answer
  • Round to the nearest tenth 8.54​
    15·2 answers
  • Briefly describe this graph of a Ferris wheel.
    7·2 answers
  • I need people to talk to please
    12·1 answer
  • NEED HELP ASAP on #1-#3
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!