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
insens350 [35]
3 years ago
11

Find the area of a circle with a

Mathematics
1 answer:
lina2011 [118]3 years ago
6 0

Answer:

254.34 in.²

Step-by-step explanation:

area = πr²

given, radius = 9 cm

according to formula

→ 3.14 × (9)²

→ 3.14 × 81

→ 254.34 in.² ans.

hope this helps you !

You might be interested in
Help please! Help me please! I don’t understand! I’ll give you brainly!
Lana71 [14]

Answer:

<u>Its a monomial of degree 0</u>

Step-by-step explanation:

pls mark brainliest

6 0
3 years ago
Read 2 more answers
The area of a circular sun spot is growing at a rate of 1,200 km2/s.
Tpy6a [65]
A)

\bf \textit{area of a circle}\\\\&#10;A=\pi r^2&#10;\\\\\\&#10;\cfrac{dA}{dt}=\pi \cdot 2r\cfrac{dr}{dt}\implies \cfrac{dA}{dt}=2\pi r\cfrac{dr}{dt}\implies \cfrac{\frac{dA}{dt}}{2\pi r}=\cfrac{dr}{dt}\\\\&#10;-----------------------------\\\\&#10;\left. \cfrac{dr}{dt}  \right|_{r=3000}\implies \cfrac{1200}{2\pi \cdot 3000}=\cfrac{dr}{dt}\\\\

B)

\bf A=\pi r^2\qquad A=490000\implies 490000=\pi r^2\implies \sqrt{\cfrac{490000}{\pi }}=r&#10;\\\\\\&#10;\left. \cfrac{dr}{dt}  \right|_{r=\sqrt{\frac{490000}{\pi }}}\implies \cfrac{1200}{2\pi \cdot \sqrt{\frac{490000}{\pi }}}=\cfrac{dr}{dt}&#10;
8 0
3 years ago
How to do proportional triangles
harina [27]

Answer: If the measures of the corresponding sides of two triangles are proportional then the triangles are similar. Likewise if the measures of two sides in one triangle are proportional to the corresponding sides in another triangle and the including angles are congruent then the triangles are similar.

Step-by-step explanation:

7 0
3 years ago
ITS EASY PLZ HELP
Angelina_Jolie [31]
  • Answer:

<em>m = (y - b)/x</em>

  • Step-by-step explanation:

<em>y = mx + b</em>

<em>mx = y - b</em>

<em>m = (y - b)/x</em>

8 0
3 years ago
Helpmeeejjrjjrjrjtktktktii
Artist 52 [7]

I would first convert the mixed fraction into an improper fraction. To put it lightly, the reciprocal is the numerator and denominator are switched. For this instance it would be 4/37.

7 0
3 years ago
Other questions:
  • Use the right-hand rule to estimate the area under the graph of y = x2 + 2 for values of x from 0 to 3.
    8·1 answer
  • Which angle has a measure less than 60
    5·1 answer
  • Hi can you please help me and explain step by step if possible thank you
    13·1 answer
  • A rectangular sheet of cooper is twice as long as it is wide. From each corner a 3-inch square is cut out, and the ends are then
    14·1 answer
  • What is the gcf of 30 and 45
    5·1 answer
  • Find the sum of the second 5 termsof the geometric a ries 3+6+12​
    9·2 answers
  • The weekly salaries of six employees at McDonalds are $140, $220, $90, $180, $140, $200. For these six salaries, determine: (a)
    11·1 answer
  • In the figure below, lines p and q are parallel. What is the value of x?
    9·2 answers
  • Christopher saves $550 every month. Assume that Matthew and Christopher both save money at constant rates. Whose unit rate s hig
    13·2 answers
  • ASAP!!!!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!