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
Sati [7]
3 years ago
8

Formula for the area of a circle in terms of its circumference

Mathematics
1 answer:
Usimov [2.4K]3 years ago
5 0
\bf \textit{circumference of a circle}\\\\
C=2\pi r\qquad \qquad \implies \cfrac{C}{2\pi }=\boxed{r}\\\\
-------------------------------\\\\
\textit{area of a circle}\\\\
A=\pi r^2\qquad \qquad \implies A=\pi \left( \boxed{\cfrac{C}{2\pi }} \right)^2\implies A=\pi \left( \cfrac{C^2}{(2\pi )^2} \right)
\\\\\\
A=\cfrac{\pi  C^2}{2^2\pi^2}\implies A=\cfrac{C^2}{4\pi }
You might be interested in
Which one of the following statements is true of perpendicular lines? A. They intersect to form an obtuse angle. B. They interse
quester [9]
They intersect at one point
6 0
3 years ago
Read 2 more answers
Can anyone do these pls?
beks73 [17]

Answer:

NRN

Step-by-step explanation:

8 0
2 years ago
Jane is comparing prices of f bottled drinks. She finds one bottle of water that cost $1.92 and contains 12 ounces. She then fin
german

Answer:

the soda is less

Step-by-step explanation:

if you divide both the soda and the waters ounces by their price than you will get 0.15 for the soda and 0.16 for the water showing that its 1 cent more expensive than the soda

5 0
3 years ago
I don’t know how to solve this problem
miss Akunina [59]

The draws are independent, so

P(\text{red then blue})=P(\text{red})\cdot P(\text{blue})

There is a total of 11 marbles in the bag, so

P(\text{red})=\dfrac3{11}

and

P(\text{blue})=\dfrac5{11}

So

P(\text{red then blue})=\dfrac{15}{121}

7 0
3 years ago
What is the estimate for each sum or difference of 2 1/8 -5/7
dsp73
2 1/8 estimate to 2 
5/7 estimate to 1.

2-1=1
4 0
3 years ago
Other questions:
  • Consider the polynomial function f(x)=4x8−6x7+3x3−10.
    8·1 answer
  • How do u put a fraction to make a decimal
    13·2 answers
  • Kyra has a rock collection.When she puts her rocks into 2 equal piles,there are no rocks left over.When she puts her rocks into
    8·1 answer
  • A shoe store is selling a pair of shoes for $60 that has been discounted by
    12·1 answer
  • Ten measurements of impact energy on specimens of A238 steel at 60 ºC are as follows:
    13·1 answer
  • Suppose you worked 4.5 hours today and 2.25 hours yesterday. If you made $87, what were you
    7·1 answer
  • 1. There are 16 boys and 18 girls in a Grade 6 math class. Write the ratio of girls to boys in words as simply as possible.
    7·1 answer
  • What is the slope of these two points (5,-11) and (25,9)?
    10·1 answer
  • 8 pencils for 14 dollars
    15·2 answers
  • Help asap worth 50 points<br> Use grouping symbols to make each equation true.<br> 16-4/2+3=9
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!