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
klasskru [66]
3 years ago
14

What does pi r 2 mean

Mathematics
2 answers:
Neporo4naja [7]3 years ago
8 0
Pi r² is circle's area expression.
So the r is radius,.

inn [45]3 years ago
8 0

In this expression, pi r^2, pi is 3.14 in approximation, considering with r, r means radius, and 2 is the exponent for r (they called this r squared), so pi r^2 is the formula for the area of a circle.

Hope this helped!

Nate

You might be interested in
What is the solution of the matrix equation?
Alenkasestr [34]

Answer:

<h3>(-12, 2)</h3>

Step-by-step explanation:

\left[\begin{array}{ccc}1&1\\2&3\end{array}\right] \left[\begin{array}{ccc}x\\y\end{array}\right] =\left[\begin{array}{ccc}8\\36\end{array}\right] \\\\\left[\begin{array}{ccc}x+y\\2x+3y\end{array}\right] =\left[\begin{array}{ccc}8\\36\end{array}\right]\\.\qquad\qquad\Downarrow\\\left\{\begin{array}{ccc}x+y=8&|\text{multiply both sides by (-2)}\\2x+3y=36\end{array}\right

\underline{+\left\{\begin{array}{ccc}-2x-2y=-16\\2x+3y=36\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad y=20\\\\\text{Put the value of y to the firast equation:}\\\\x+20=8\qquad\text{subtract 20 from both sides}\\x=-12\\\\\boxed{(-12,\ 20)}

8 0
3 years ago
A gardener buys a plant that is 12cm in height. Each week after that the plant grows 10cm. Note: The plant is 12cm high at the b
BaLLatris [955]
82, 152, 222, 292, 362.  You add 70 each time.
6 0
4 years ago
Read 2 more answers
Find the area of the circle with the given diameter.<br> d = 28 inches
alexdok [17]

Answer: 196pi in.^2

Step-by-step explanation:

Divide the diameter by two.

You would get 14, then square it, you would get 196.

4 0
3 years ago
Write an equation in point slope form for a line that includes the origin and (9,-3)
aivan3 [116]
So we are given two points that the line crosses, the origin and (9, -3), we can calculate the slope m of the line with these data, dividing the y segment by the x segment:
m = (-3 - 0)/(9 - 0) = -3/9
m = -1/3
then we can use the point slope line equation to find the line equation, lets use the point origin (0,0) to do so:
y - y1 = m(x - x1), where x1, y1 are the coordinates of a point that the line crosses:
y - 0 = (-1/3)(x - 0)
y = <span>(-1/3)x
so this is the equation of the line, slope  -1/3 and y intercept 0</span>
3 0
3 years ago
I need help with this question please.​
MakcuM [25]

Answer:

30 degrees.

Step-by-step explanation:

Rotational symmetry is defined as a figure having the same appearance when rotated by a certain angle.

The wheel has 12 "handles." We can use these as reference points when rotating the image.

We also know that we can rotate by a total of 360 degrees. We can say that:

360/12 = 30 degrees.

Each time you rotate the wheel by 30 degrees, the image will end up on another handle (looks the same). This shows rotational symmetry.

I hope this helps!

7 0
4 years ago
Other questions:
  • What is the solution to the open sentence?
    9·1 answer
  • What is the ratio of 33/36
    15·2 answers
  • Which rule explains why these triangles are similar
    5·1 answer
  • Bank service charges are automatically deducted from the bank account, why are these recorded in the cash payments journal
    15·1 answer
  • Please help...with this question
    15·1 answer
  • A shop owner has 75 pounds of coffee that costs $4.50 per pound. How much coffee that costs $3.50 per pound should he mix with t
    13·2 answers
  • Help<br><br><br><br><br><br><br><br><br><br><br> Nxhxhxhdhdhdbsbsbdhdhd
    11·1 answer
  • Mrs. Bell can grade 12 papers in 20 minutes. At this
    5·2 answers
  • Sean has to paint a room that has 1,250 square feet of wall area. He can paint at a rate of
    10·1 answer
  • Plz Solve Will Mark Brainliest and No Stealing Points Or Will Report<br> Part 2
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!