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
zepelin [54]
3 years ago
14

If the radius of a circle is increased by 100%, then the area is increased by:

Mathematics
1 answer:
shtirl [24]3 years ago
5 0
A_1=\pi r^2\\\\R=2r\ then\ A_2=\pi R^2\to A_2=\pi(2r)^2=4\pi r^2\\\\A_2-A_1=4\pi r^2-\pi r^2=3\pi r^2=3A_1\\\\3=300\%\\\\Answer:(C).
You might be interested in
A cube-shaped box can be wrapped completely in gift wrap that measures 384 square inches. What is the volume of the box?
aev [14]

Answer:

7529.536

Step-by-step explanation:

√384=19.6

19.6, is therefore the length of one side

Volume of cube is length³

19.6³=7529.536

Well it's just a try for me

5 0
2 years ago
A circle has a radius of 6 ft.
den301095 [7]
I'm assuming that 5π3 is in fact 5π/3

convert radian to degrees:

5π / 3 = 5(180°) / 3 = 900° / 3 = 300°

Area of the circle = π r²
A = 3.14 * (6 ft)²
A = 3.14 * 36 ft²
A = 113.04 ft²

Area of the sector:

113.04 ft²  * 300°/360° = 94.2 ft²

The area of the sector formed by a central angle measuring 5π/3 radian is 94.2 ft²
8 0
3 years ago
Read 2 more answers
Divide and simplify 5/12÷20/36
gregori [183]
Hello there! The formula for dividing fraction is keep, change, flip. You keep the first fraction the same, change division into multiplication, and flip the second fraction over by its reciprocal. In this case, 5/12 remains the same, division becoems multiplication, and 20/36 flips over to become 36/20. So the expression becomes this:

5/12 * 36/20

Now, we multiply straight across. 5 * 36 is 180. 12 * 20 is 240. 180/240 is 3/4 in simplest form. There. The quotient is 3/4.
3 0
3 years ago
What is the volume of the following rectangular prism? 9/5 2/3
MaRussiya [10]

Answer:

1.2

Step-by-step explanation:

9/5*2/3=1.2

4 0
3 years ago
Read 2 more answers
A discount of 18% on a tennis racquet reduced its price by $16.91. What was the sale price?
Anni [7]
18%=$16.91
1%=$16.91÷18
=$0.93944(3.s.f)
100%=$0.93944x100
=$93.94(2.d.p)
8 0
3 years ago
Other questions:
  • if p(-3,6) is a point on trapezoid what is the new location of P if the shape is rotated 90 degrees clock wise
    10·1 answer
  • Uca is designing a propeller system that consists of 3 blades, each of which is
    12·1 answer
  • San Francisco is one of the most expensive cities in which to live in the United States. As of February 2013, the mean rent for
    13·1 answer
  • What’s the answer for x-3=6
    14·2 answers
  • Points D and E are midpoints of the sides of triangle ABC. The perimeter of the triangle is 48 units.
    13·2 answers
  • The population of Mathlandia in 1995 was 23,473 and was projected to grow at a rate of 12% per decade. Predict the population in
    14·1 answer
  • Which of the following information would best be displayed on a pie chart?
    15·2 answers
  • HELP ASAP ASAP HELP HELP ASAP ASAP
    12·1 answer
  • Micah wants to buy a new guitar with his debit card. Which statement is probably true?
    10·1 answer
  • What are the values of x and y?<br><br> (9x - 19y)<br> (5x - 17)<br> (3x + 3)º<br> X =<br><br> y =
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!