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
brilliants [131]
3 years ago
7

Please help with this question!! I need serious help!!

Mathematics
1 answer:
asambeis [7]3 years ago
5 0

Answer:

<h2>The circumference is multipled by 4.</h2>

Step-by-step explanation:

The formula of an area of a circle"

A=\pi r^2

The formula of a circumference of a circle:

C=2\pi r

The area multipled by 16:

16A=16\pi r^2\\\\16A=\pi(4^2r^2)\\\\16A=\pi(4r)^2

The radius has increased fourfold, therefore:

C'=2\pi(4r)=4(2\pi r)=4C

The circumference is multipled by 4.

You can calculate the area and check the circumference:

r=11.6\ in\\\\A=\pi(11.6)^2=132.56\pi\\\\16A=(16)(134.56\pi)=2152.96\pi\ in^2

Calculate the radius:

\pi r^2=2152.96\pi             <em>divide both sides by π</em>

r^2=2152.96\to r=\sqrt{2152.96}\\\\r=46.4\ in

Calculate the circumference of both circles:

r=11.6\ in\\\\C=2\pi(11.6)=23.2\pi\ in

r=46.4\ in\\\\C'=2\pi(46.4)=92.8\pi\ in

\dfrac{C'}{C}=\dfrac{92.8\pi}{23.2\pi}=4\to C'=4C

You might be interested in
6. HELP ASAP!!!!!!! PLS
allsm [11]

Answer:

85 is m2 the correct answer

8 0
3 years ago
Read 2 more answers
Luisa recorded her dog’s weight, in kilograms, each week for 9 wk.
svp [43]
<span>In order to find the median weight we must arrange the given values in an ascending order and take the middle one. Doing so lets us see that the dog's median weight was 4.8 kg.</span>
3 0
3 years ago
HURRY PLEASE The top and bottom of a right rectangular prism are 4 inches long and 4 inches wide. What is true about the other f
Masteriza [31]

Answer:

  • All four of the remaining faces will be 4 inches wide.

Step-by-step explanation:

A right rectangular prism with square base and top with sides of 4 in.

It has four sides of 4 in wide each and of equal height of unknown measure.

<u>Options:</u>

All four of the remaining faces will have a height of 4 inches.

  • Incorrect, the height is unknown.

There is not enough information to tell what the other faces will look like.

  • Incorrect, all the other faces are rectangular.

Two of the remaining faces will be 4 inches wide.

  • Incorrect, all the faces are 4 in wide.

All four of the remaining faces will be 4 inches wide.

  • Correct.
6 0
3 years ago
What is the name of this polygon?
Aleksandr [31]

Answer:

i believe it is a hexagon, since it has 5 sides

7 0
3 years ago
Read 2 more answers
PLS HURRY, I neeeedd helppppp
Sedaia [141]

Answer:

third option

r > 11

_

hope it helps

4 0
3 years ago
Other questions:
  • Find the next term of the series. question. 21,31,22,74?​
    5·1 answer
  • In Buffalo, New York the temperature was -14 F in the morning. If the temperature dropped 7 F, what is the temperature now?
    8·2 answers
  • Need help with the question at the top<br><br> Thanks
    15·1 answer
  • 2/5x - 4 = 10 solve for x
    10·1 answer
  • if (2k, k) and (3k, 4k) are two points on the graph of a line and k is not equal to 0, what is the slope of the line?
    15·2 answers
  • What is the inverse of the following statement? If two triangles are congruent, then their corresponding angles are congruent. I
    10·2 answers
  • PLEASE HELP I NEED HELP ASAP PLEASE
    7·1 answer
  • 4 = ⅝ + w <br><br> what is w please show work or explain
    5·1 answer
  • 11 is what percentage of 16? Round the nearest tenth.
    8·2 answers
  • Need help i don't understand this part
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!