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
Leni [432]
3 years ago
12

The radius of circle A is r cm. The radius of circle B is twice the radius of circle A. What difference between the circumferenc

e of circle B and circle A (in cm)?​
Mathematics
1 answer:
avanturin [10]3 years ago
3 0

9514 1404 393

Answer:

  2πr cm

Step-by-step explanation:

The circumference of a circle of radius r is ...

  C = 2πr

For a radius of (r cm), the circumference is ...

  A = 2π(r cm) = 2πr cm

For a radius of (2r cm), the circumference is ...

  B = 2π(2r cm) = 4πr cm

Then the difference between the circumferences is ...

  B -A = (4πr cm) -(2πr cm) = 2πr cm . . . . difference in circumference

You might be interested in
Hey! how's your Saturday going :) <br> (if it's Saturday for you)
Bad White [126]

Answer:

great :) wbu

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
PLEASE HELP THANKS :)
olga55 [171]
Answer: 15
Explanation: quick maths in the brain
5 0
3 years ago
Find the coordinates of C' after a reflection across the line
iragen [17]
<h3>Answer:  (4,2)</h3>

==============================================================

Explanation:

C is at (0,0). Ignore the other points.

Reflecting over y = 1 lands the point on (0,2) because we move 1 unit up to arrive at the line of reflection, and then we keep going one more unit (same direction) to complete the full reflection transformation. I'll call this point P.

Then we reflect point P over the line x = 2 to arrive at the location Q = (4,2). Note how we moved 2 units to the right to get to the line of reflection, and then keep moving the same direction 2 more units, then we have applied the operation of "reflect over the line x = 2"

So we have started at C = (0,0), moved to P = (0,2) and then finally arrived at the destination Q = (4,2). This is the location of C' as well.

All of this is shown in the diagram below.

4 0
3 years ago
A backpack costs $18 and has a 7 percent tax. How much will Sheila have to pay for the backpack after tax?
Dmitry_Shevchenko [17]

Answer:

19.26

Step-by-step explanation:

7% of 18 is 1.26

1.26+18=19.26

4 0
3 years ago
What is the variable in the expression below?<br><br><br> 9.X
Ludmilka [50]

Answer:

The variable in that expression is x

5 0
3 years ago
Read 2 more answers
Other questions:
  • 4.05E+9 In scientific notation ?
    10·1 answer
  • Which of the following trigonometric expressions is equivalent to csc(-112°)? csc(68°)
    11·2 answers
  • A recipe uses 3 cups of flour and 2 cups of sugar. Write the ratio of flour to sugar as a fraction, then find the unit rate.
    7·2 answers
  • A school principal ordered 1,000 pencils. He gave an equal number to each of 7 teachers until he had given out as many as possib
    14·1 answer
  • Solve by elimination: 3y-4x=29<br> 2y+5=4
    11·1 answer
  • What is the inverse of the function f(x) = 2x + 1?
    7·2 answers
  • .solve for c <br> c−1.5+6.8=0.6<br><br> I NEED HELP
    7·1 answer
  • To stay within your budget,the area of the house and the garage combined is at most 3000 square feet.The area of the garage is 5
    12·1 answer
  • 30% of which number is 3?<br> O A. 10<br> B. 9<br> O c. 1<br> O D. 0.9<br> O E. 0.1
    13·2 answers
  • The charge on an ion is
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!