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
kow [346]
3 years ago
11

If the diameter of a circle is 20mm, what is the area of the circle?

Mathematics
1 answer:
Vsevolod [243]3 years ago
3 0

Answer:

314.16 sq mm

Step-by-step explanation:

formula for area of a circle = pi(r^2)

if the diameter is 20mm then the radius is 10 mm

When you plug in pi(10mm^2) you get 314.16 sq mm

You might be interested in
6th grade math guys! (:
Oxana [17]

Answer:

I'm pretty sure its B

Step-by-step explanation:

I think it's that because you are trying to divide 3/4 by 1/10 so you need to flip the second number and multiply 3/4 by 10/1.. not positive haven't done it in a while.

3 0
3 years ago
Read 2 more answers
Eight more than three times the difference of four and a number” when n = 3?
Snezhnost [94]
8 + 3 (4 - n )
n= 3 
8 + 3( 4-3)
8 + 3 * 1 
8 + 3 = 11
8 0
3 years ago
Which wind belt starts at the horse latitudes and moves toward the poles?
kvasek [131]

Answer:

The prevailing westerlies.

Step-by-step explanation:

The prevailing westerlies are found between 30 (horse latitudes) and 60 degrees latitude. They come from the high-pressure areas in the horse latitudes and go towards the poles.

4 0
3 years ago
Which of the following is a perfect square trinomial?
shutvik [7]

Answer:

A.

Step-by-step explanation:

Take a look at what happens when squaring either of these...

(ax-by)^2=(ax-by)(ax-by)=a^2x^2-2abxy+b^2y^2\\\\(ax+by)^2=(ax+by)(ax+by)=a^2x^2+2abxy+b^2y^2\\

Notice a couple of patterns.

1.  The last term has a positive coefficient.  That rules out answer choices C and D.

2.  The coefficient of the middle term is either +2ab \text{ or } -2ab .  So what are <em>a</em>  and <em>b</em>?  <em>a</em> is the square root of the x^2 term and <em>b</em> is the square root of the y^2 term.

25x^2 \Rightarrow a=5\\\\9y^2 \Rightarrow b=3\\\\ab=15\\\\2ab=30

The middle coefficient needs to be either +30 or -30.  The answer is choice A.

5 0
2 years ago
Please help me!!!!!!!!!!
kirill [66]
I think the  answer may be D. You can graph the points and draw  a line through the points to see what other points are intersected by the line. 
5 0
3 years ago
Other questions:
  • A random sample of size 21 was taken from a normal population. the sample average was 9.87 and the sample sd was 1.17. at the si
    9·1 answer
  • What are the coordinates of the point (10, -4) if it was reflected across the y-axis
    13·1 answer
  • Identify all of the following that are prime numbers​
    13·1 answer
  • Find the value of x using angle properties &amp; the measure of
    12·1 answer
  • What is f(x) = 2x2 + 28x – 5 written in vertex form? f(x) = 2(x + 7)2 – 19 f(x) = 2(x + 7)2 – 103 f(x) = 2(x + 14)2 – 14 f(x) =
    10·2 answers
  • What is the common difference for this arithmetic sequence?
    7·2 answers
  • Find the area of the figure
    12·1 answer
  • PLEASE HELP I ONLY HAVE ONE HOUR PLEASE HELP PLEASE
    11·1 answer
  • Is 91,068,929 divisible by 4?<br><br> YES OR NO
    11·2 answers
  • PLEASE HELP !!! which choices are equivalent to square root of -4???
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!