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
Dafna1 [17]
3 years ago
10

The sum of the areas of two circles is 8pie square meters. Find the length of a radius of each circle ifone of them is twice as

long as the other.what is the radius of the larger circle?

Mathematics
1 answer:
NeX [460]3 years ago
5 0
Nice

area=pir^2
the areas are
pir^2+pi(2r)^2
they add to 8pi

8pi=pir^2+pi(2r)^2
undistribute pi
8pi=pi(r^2+(2r)^2)
divide both sides by pi
8=r^2+(2r)^2
expand
8=r^2+4r^2
add
8=5r^2
divide by 5
8/5=r^2
sqrt both sides
√(8/5)=r
double since it is double
2√(8/5) is radius of bigger aka (4√10)/5

radius=(4√10)/5
You might be interested in
Every day, Katie looks for seashells on the beach. She has 282828 shells in her collection. Katie finds 121212 more shells each
Hoochie [10]

Katie won't have more than  100 shells until the 7th day

8 0
3 years ago
14+x=y<br><br>what does x equal ​
AfilCa [17]

Answer:

Step-by-step explanation:

14 + x = y

x = y - 14

7 0
3 years ago
In triangle XYZ, m∠Z &gt; m∠X + m∠Y. Which must be true about △XYZ?
Ne4ueva [31]

Answer:

I don't understand

Step-by-step explanation:

6 0
3 years ago
Why there is 1/3 cup of fruit in half a smoothie
jeka57 [31]

Answer: because the other half is used on the base solution

Step-by-step explanation:

5 0
3 years ago
Solve for the variable: 12 = 5x = 7
IrinaVladis [17]

Hello from MrBillDoesMath!

Answer:  x = 1

Discussion :

Per the author, the equation to solve is  12 = 5x + 7

Isolate the "x" variable by subtracting 7 from both sides of the equation:

12 = 5x + 7

-7 =        -7

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

12-7 = 5x + 0


or


5 = 5x

Dividing both sides by 5 gives x - 1


Regards, MrB

6 0
3 years ago
Other questions:
  • The length of a rectangle is 3 m longer than its width. if the perimeter of the rectangle is 42 m , find its area.
    9·1 answer
  • What is 4 divided by 6 + 89 - 34 -89 +190
    14·2 answers
  • An orange can be separated into 8 sections. If 4 people eat 4 sections each, how many oranges will it take to feed them?
    15·2 answers
  • How many positive integers less than 10,000 are such that the product of their digits is 210?A. 24
    8·1 answer
  • For one month Siera calculated her home town’s average high temperature in degrees Fahrenheit. She wants to convert that tempera
    9·2 answers
  • What is 1/6 in simplest form
    15·2 answers
  • Help I need to know What is the volume of this cylinder?
    11·2 answers
  • Does anyone know this please?
    9·1 answer
  • zoe is buying treats for her dog. Her total bill is $20.25. if each treat cost 0.75 how much treats did she buy?
    8·1 answer
  • Which of the following is a characteristic of the circumcenter of a triangle? A. It is the center of the circle that can be insc
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!