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
lawyer [7]
3 years ago
13

Find the circumference and area of a circle with diameter of 21 inches

Mathematics
1 answer:
lianna [129]3 years ago
7 0
To solve for the circumference and the area of a circle, first you must determine the radius.

D = 21 inches
R = 1/2D = 1/2(21) = 10.5 inches.

C = 2pi • r
C = 2(3.14) • 10.5 inches
C = 65.97 inches.

A = Pi • r ^2
A = (3.14) • 10.5^2
A = 346.185 in^2.

The area of a circle is 346.185 in^2.
You might be interested in
I need help for part B could you show your work as well? thanks...
Ksivusya [100]
Hello army :,) Here’s the answer:


B)
(3.19 * 10^8)/(8.23 * 10^5) = 3.19/8.23 * 10^8/10^5
= 3.19/8.23 * 10^3 = 0.387606318 * 10^3
= 387.606318

The population of US is 387 times larger than that of Ohio's
8 0
3 years ago
Maurice has completed 72 pages of the research paper he is writing. That is 90% of the required length of the paper. What is the
iogann1982 [59]

Answer:

its 100 pages ................

5 0
3 years ago
Read 2 more answers
A business committee decided to increase the area of their square parking lot. They increased the width of the parking lot by 60
valina [46]
Kaks pluss kaks on neli miinus
4 0
3 years ago
Under which conditions do you expect helium gas to deviate most from ideal behavior?
kherson [118]
"300 K and 2 atm" is the condition among the conditions given in the question that you can <span>expect helium gas to deviate most from ideal behavior. The correct option among all the options that are given in the question is the second option or option "b". I hope the answer has helped you.</span>
6 0
4 years ago
Read 2 more answers
13=X/4<br><br> A. 13/4<br><br> B. 4/13<br><br> C. 52<br><br> D. 9
Snowcat [4.5K]

Answer:

Hi! The answer to your question is C. 52

Step-by-step explanation:

☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆

☆Brainliest is greatly appreciated!☆

Hope this helps!

- Brooklynn Deka

3 0
3 years ago
Other questions:
  • Using the number line shown, subtract 1 2/6 from 4 4/6.
    6·1 answer
  • What is the quotient of 32 divided by 4 as a fraction?
    9·1 answer
  • What’s is 2000+100.000
    13·2 answers
  • Would you rather work seven
    15·1 answer
  • I need helP on this Pattern Plz
    15·2 answers
  • Please help me kitties:)&lt;3
    14·1 answer
  • I need help what is the answer?
    6·2 answers
  • Are All rectangles are quadrilaterals? Explain.
    13·2 answers
  • The position of an object in a video game is represented by an ordered pair. The coordinates of the ordered pair give the
    6·1 answer
  • What does a 360 degrees rotation look like?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!