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
geniusboy [140]
3 years ago
7

The area of a circle is 16cm2. What is the circle's circumference?

Mathematics
1 answer:
Delicious77 [7]3 years ago
7 0
A=pir^2
c=2pir

a=pir^2=16
pir^2=16
divide both sides by pi or about 3.141592
r^2=5.0929581789406507446042804279205
sqrt both sides
r=2.2567583341910251477923178062431

circumference=2pir
circumference=2pi(2.2567583341910251477923178062431)
c=4.5135166683820502955846356124862pi
about 4.5pi square cm



You might be interested in
write two expressions that could be used to help you determine the new cost of a $415 television after adding a 6% sales tax
bearhunter [10]
1. 415 x 1.06 = 
2. 415 + (415 x 0.06) = 
8 0
3 years ago
The number of bus riders was recorded on one route. The data have these values: minimum = 18, lower quartile = 22,
Angelina_Jolie [31]

Answer:

The answer is B

Step-by-step explanation:

I took the test

5 0
3 years ago
The side lengths of a triangle are 6, 8, and 12. Is this a right triangle?
gizmo_the_mogwai [7]
<h2><u>D.</u></h2><h3>It's incorrect, because 6 squared = 36, 8 squared = 64, add them together and you get 100. 12 squared does NOT equal 100, it equals 144.</h3>

<em>(To find the hypotenuse {longest side of the triangle}, you square the two short sides, add them together, and finally, divide it by the provided number, and see if the number matches the provided number's square.)</em>

<h3>Brainly if correct and Thanks!</h3>
8 0
3 years ago
Read 2 more answers
AC = <br> Round your answer to the nearest hundredth.
dusya [7]

Answer:

AC ≈ 5.03

Step-by-step explanation:

We can solve the problem above using the trigonometric ratio, they are;

SOH CAH TOA

sin Ф = opposite / hypotenuse

cosФ= adjacent/ hypotenuse

tan Ф = opposite / adjacent

From the diagram above, in reference to angle B;

opposite =AC     and   adjacent =BC

Since we have opposite and adjacent, the best formula to use is

tanФ = opposite / adjacent

tan B = AC  / BC

tan 40 =  AC/ 6

Multiply both-side of the equation by 6

6× tan 40   =  AC/ 6  ×  6

At the right-hand side of the equation, 6 will cancel-out 6 leaving us with just AC

6×tan 40 = AC

5.034598  = AC

AC ≈ 5.03   to the nearest hundredths

4 0
3 years ago
Find the total cost of 5 bales of hay at $2.75 per bale and 2 bags of potatoes at $2.90 per bag.
Elan Coil [88]

Answer: $19.55

Step-by-step explanation:

  1. 2.75 * 5 = 13.75.
  2. 2.90 * 2 = 5.80
  3. 13.75 + 5.80 = 19.55
5 0
3 years ago
Other questions:
  • How much time does it take for a bird flying at a speed of 45 kilometers per hours to travel a distance of 1,800 kilometers
    14·1 answer
  • Which second degree polynomial function f(x) has a lead coefficient of 3 and roots 4 and 1?
    12·2 answers
  • Solve for x.<br><br> |2x - 8| - 2 = 16 - 2x
    10·2 answers
  • Hi I need help, anyone???
    5·1 answer
  • What is equivalent to expression 2(7x + 3 - x) ?<br> PLEASE DO STEP BY STEP
    12·2 answers
  • Which quantity does this number line represent?
    15·1 answer
  • Kristen can type a 50-page paper in 8 hours. Last month, Kristen and Courtney typed a 50-page paper in 6 hours. How long would i
    15·1 answer
  • Could use a little help<br><br>Distance form points isn't my strong point ;-;
    14·2 answers
  • * Which expression is equivalent to 7(p + 5) *​
    7·1 answer
  • 5/7 = a/35 what is the answer ?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!