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
klio [65]
2 years ago
13

The radius of a circle is increased by 3 in., which increases the area by 100 in. Find the radius of the original circle. Round

to the nearest hundredth.
Mathematics
1 answer:
Licemer1 [7]2 years ago
6 0

Answer:

3.81 inches

Step-by-step explanation:

πr² + 100 = π(r+3)²

divide by π and simplify:

r² + (100/π) = r² + 6r + 9

100/π = r² + 6r + 9

31.8309886184 - 9 = r² +6r

r² = 6r - 22.8309886184

0 = 6r - 22.8309886184

22.8309886184 = 6r

divide by 6:

3.80516476973 ≈ 3.81 inches

You might be interested in
True or false, -|21| is always positive
Anuta_ua [19.1K]

Answer:

yes because it | | means absolute value

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
PLZZZ HELLP I'LL GIVE YOU POINTS AND MARK YOU AS BRAINLIEST
yanalaym [24]
You plug 11 in where x is.
r(11) = (11 + 1)(11 - 3)
= (12)(8)
= 96
3 0
3 years ago
Help Fast Show WORK and. NO links <br> 5f = -75 check your solutio\
pantera1 [17]

Answer:

f= -15

Step-by-step explanation:

u just have to divide

-75/5= -15  so f equal -15

3 0
3 years ago
Read 2 more answers
Play Ball Little League baseball games are only played on Tuesday nights and Saturday afternoons. Rod is playing center field. I
SOVA2 [1]
C, tuesday
im posotive 
4 0
3 years ago
Read 2 more answers
Write -3/16, 7/4, -3/8 in order least to greatest
Katyanochek1 [597]
The answer is b: -3/8, -3/16, 7/4
7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the answer to A?
    5·2 answers
  • Cicero and Themistocles run for the same political office. Cicero received w votes in the election, and
    8·2 answers
  • Jessie spent $10 on 3 hair accessories. Which point represents this relationship? On a coordinate plane, a graph titled Jessie's
    11·2 answers
  • Write an integer to represent 3 degrees below -4 degrees
    15·2 answers
  • Find all values of $x$ such that $\dfrac{x}{x+4} = -\dfrac{9}{x+3}$. If you find more than one value, then list your solutions i
    9·2 answers
  • 2y-4x=-12 what is the slope intercept
    8·2 answers
  • Of all the species in the world, 444 out of every 555 are insects. What percentage of species are insects?
    12·2 answers
  • a 42 foot flagpole near the washington monument casts a shadow that is 14 feet long. At the same time, the washington monument c
    13·1 answer
  • Select the line plot that represents the given ages of students in a youth choir.
    10·1 answer
  • Point M is on line segment LN. Given LN=4x, MN= x, and LM=3, determine the numerical length of LN.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!