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
kipiarov [429]
2 years ago
12

The radius of a circle is 14cm. Find the radius of the circle whose area is double of the area of circle. ​

Mathematics
2 answers:
zepelin [54]2 years ago
8 0

Answer:

  • 14√2 cm

Step-by-step explanation:

<u>Area of circle equation:</u>

  • A = πr²

Let the radius of bigger circle is x.

<u>We have:</u>

  • π(14²)*2 = πx²

<u>Solve for x:</u>

  • x² = 2(14²)
  • x = √2(14²)
  • x = 14√2 cm
pochemuha2 years ago
7 0

19.8cm

Step-by-step explanation:

First find area of small circle:

A = πr2

A = 22/7 x 14 x 14

A = 22 x 2 x 14

A = 616cm2

Area of bigger circle is double that of the small circle:

= 616 x 2

= 1,232 cm2

πR2 = A

22/7 x r2 = 1,232

r2 = (1,232 x 7) ÷ 22

r2 = 8624 ÷ 22

\sqrt{r ^{2} }  =  \sqrt{392}

radius of bigger circle = <u>19.8cm</u>

You might be interested in
What is the area of a circle with a diameter of 14 meters? Use 22/7for pi.
Bogdan [553]
14 times 22/7 (pi) is 44

6 0
3 years ago
Read 2 more answers
Use the function f(x) = 2x2 − 3x − 5 to answer the questions.
Dovator [93]

Answer:

see below

Step-by-step explanation:

A:  2x² - 3x - 5

    (2x - 5)(x + 1)

B:  Set the factored equation equal to zero and solve for x.

(2x - 5)(x + 1) = 0

2x - 5 = 0

2x = 5

x = 5/2

x + 1 = 0

x = -1

The x-intercepts are 5/2 and -1

C)  To find the end behavior, you need to look at the term in the unfactored equation with the highest exponential number.  For this equation, that is 2x².  Since the exponent is positive,  both ends of the graph will point in the same direction.  Because the leading coefficent is positive, the graph will point upwards.  The end behavior of the graph is that as the x-values approach both ∞ and -∞, the function approaches ∞.

D)  Since we know that the x-intercepts are 5/2 and -1, you can plot these points.  You also know that the graph will be in an upward U shape.  Plug in  a couple x-values and plot them to make the graphing of the equation more accurate.

5 0
3 years ago
A rectangle has a length of 12 m and a width of 400 cm. What is the perimeter of the rectangle?
Nataliya [291]

Answer:

Perimeter = 32 meters

Step-by-step explanation:

1 meter = 1m = 100 cm = 100 centimeters

400cm = 400/100 = 4 meters

Rectangle Perimeter = 2(legth + width)

                                   = 2(12 + 4)

                                   = 2*16

                                    = 32 meters

4 0
3 years ago
Please answer this correctly
Rom4ik [11]

Hey!

---------------------------------------------------------

Solution:

This company has a budget of $9,009

They want to send employees to a conference which is $21/person.

9,009 / 21 = $429

---------------------------------------------------------

Answer:

They can send <u>$429 employees</u> to the conference.

---------------------------------------------------------

Hope This Helps :)

5 0
3 years ago
Find the product of (–d + e)(4e + d). Which statements are true? Check all that apply. There are 2 terms in the product. There a
vagabundo [1.1K]
There are three terms in the product, and the product is 2 degree
3 0
3 years ago
Read 2 more answers
Other questions:
  • Subtract:<br> 7n - (2n-8)<br> Your answer should be in simplest terms.<br> Enter the correct answer
    13·2 answers
  • The coordinates below are the three vertices of a rectangle. Identify the fourth coordinate and the area of the rectangle.
    8·1 answer
  • AB = 44 + 3xBC = 33 + yCD = 64 − xAD = 48 − 2yQuadrilateral ABCD is a parallelogram if both pairs of opposite sides are congruen
    10·1 answer
  • Marcus purchases 75 shares of stock. A year after purchasing the stocks, the value of the stock is $2 less per share. Write a mu
    11·1 answer
  • Suppose that Carl and Susan are newborn infants randomly selected from the general population. You are analyzing some probabilit
    8·1 answer
  • The histogram shows the number of gallons of gasoline purchased weekly by some drivers. According to the histogram, what is the
    5·2 answers
  • A drink is made by mixing pineapple juice, orange juice and lime juice in the ratio 2:7:3. How much pineapple juice is used
    11·1 answer
  • A triangle has sides with lengths of 64 kilometers, 80 kilometers, and 51 kilometers. Is it a right triangle?
    11·2 answers
  • PLEASE ANSWER THIS ASAP !!!
    9·1 answer
  • Y= 2.5x+ 5.8 when x = 0.6 pls find the function
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!