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
kirill [66]
3 years ago
13

Find the area of a circle with a radius of 21 inches.

Mathematics
2 answers:
tiny-mole [99]3 years ago
8 0

Answer:

1384.74 inches.

Step-by-step explanation:

The formula for area of a circle is:

a=\pi *r^2(3.14*radius*radius)

\pi =3.14,  r=radius.

According to the word problem, the radius of the circle is 21 inches.

Now, we can just plug the numbers into the formula.

\pi *21^2(3.14*21*21)=1384.74

Therefore, the area of the circle is 1384.74 inches.

Alex3 years ago
3 0

Answer:

A≈1385.44in²

Step-by-step explanation:

A=πr2=π·212≈1385.44236in²

You might be interested in
Please help me also explain your answer so I can get better at this thank you :)
Elina [12.6K]
Answer: 880

Explanation: 132/0.15 = 880 sry it wasnt thorough explanation i dont have time
6 0
2 years ago
Read 2 more answers
3x-6y=6 in function notation
JulijaS [17]
Subtract 3x from both sides:

-6y = -3x + 6

divide both sides by -6 to get y by itself:

y = 1/2x - 1

function notation is rewriting y as a function:

f(x) = 1/2x -1
3 0
3 years ago
The product of the slopes of perpendicular lines is always
erastovalidia [21]
The product of the slopes is -1.
8 0
2 years ago
Find the distance between the points given. (-3, -6) and (3, 2)
vlada-n [284]

Answer:

10 units

Step-by-step explanation:

Moving from (-3, -6) to (3, 2), x increases by 6.  Draw a triangle and use this 6 as the length of the base.  y increases by 8.  Label the height of the triangle with this 8.  Then find the hypotenuse (which is also the desired distance) by using the Pythagorean Theorem:

6^2 + 8^2 = d^2, where d is that distance:

36 + 64 = 100 = d^2, and so d = 10.  The distance in question is 10 units.

5 0
2 years ago
Boris is a web developer. His annual gross salary is $45,000. From this, he must pay social security (calculated as 10% of his g
Semenov [28]

Answer: $32,625

Step-by-step explanation:

40,000-10,000 = 35,000 ---> how much is taxed

35,000 x .25 = 8,750 = income tax

45,000 - 8,750 = 36,250

36,250 x .1 = 3,625 ---> social security

45,000 (gross pay) - 8,750 (income tax) - 3,625 = 32, 625

3 0
3 years ago
Read 2 more answers
Other questions:
  • Please help on this...
    13·1 answer
  • Find the sum of the first 50 terms of the sequence -6, -2, 2, 6
    9·1 answer
  • A (0, 2) and B (6,6) are points on the straight line ABCD.
    11·2 answers
  • You can drive 420 miles on 20 gallons in 6 hours. How far can you drive on 1 gallon?
    12·2 answers
  • A line has a slope of - 4 and includes the points (6,v) and (3,3). What is the value of v?
    14·1 answer
  • A number is between 9 and 14. It has prime factors of 2 and 3. What is the​ number?
    7·2 answers
  • 5x^+20x +15=0<br> Pls help
    10·1 answer
  • In which choice do all the points lie on the same line
    14·2 answers
  • What is the ratio of vowels to consonants?<br><br>MATHEMATICS​
    7·1 answer
  • Jacob spends 60 minutes in the gym every day doing freehand exercises and running on the treadmill. He runs on the treadmill for
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!