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elena-s [515]
3 years ago
11

PLZ HELP ASAP AREA OF A SECTOR

Mathematics
1 answer:
timama [110]3 years ago
4 0
The relationship of arcs is:
 S '/ S = ((1/9) * pi * r) / (2 * pi * r)
 Rewriting we have:
 S '/ S = ((1/9)) / (2)
 S '/ S = 1/18
 Therefore, the area of the shaded region is:
 A '= (S' / S) * A
 Where A: area of the complete circle:
 Clearing we have:
 A = (A ') / (S' / S)
 Substituting:
 A = ((1/2) pi) / (1/18)
 A = ((18/2) pi)
 A = (9pi)
 Answer:
 The area of the circle is:
 
A = (9pi)
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HELP NEEDED ASAP WILL GIVE 5 STAR RATING AND BRAINLIEST!
stealth61 [152]

Answer:

The answer to your question is: ∠K   = 138°

Step-by-step explanation:

m∠N = 42°

m∠K = ?

The sum of all the internal angles in a quadrangle equals 360°

then

        ∠N + ∠L + ∠M + ∠K = 360°

        ∠N = ∠ L   and ∠M = ∠K

So, 2 ∠N + 2 ∠K = 360

Substitution

       2 (42) + 2 ∠K = 360

       84  + 2 ∠K = 360

       2 ∠K = 360 - 84

       2 ∠K = 276

      ∠K  = 276 / 2

     ∠K   = 138°

8 0
3 years ago
Mahnoor randomly selects times to walk into a local restaurant and observe the type of music being played. She found that the re
max2010maxim [7]

Answer:

country = 0.31

rock and roll =0.47

Blues = 0.22

Step-by-step explanation:

country = 11

Rock and roll= 17

blues = 8

Total = 36

the probabilities by dividing the frequencies by the total. ( round to the nearest hundredth.)

11/36 = country

17/36 = rock and roll

8/36 = blues

Divide

country = 0.31

rock and roll =0.47

Blues = 0.22

pls mark brainliest

8 0
3 years ago
Plz Help ASAP! I will mark Brainliest!
Wewaii [24]
If you have a ruler I can how you a faster why you do this
3 0
3 years ago
Read 2 more answers
Help Perform the indicated operation.<br><br> (-7) · (-5)<br><br> -12<br> -35<br> 12<br> 35
Flauer [41]
<h3>Answer:</h3>

35

<h3>Step-by-step explanation:</h3>

(-7) • (-5)

= 7 • 5

= 7 + 7 + 7 + 7 + 7

= 14 + 7 + 7 + 7

= 21 + 7 + 7

= 28 + 7

= 35

4 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP! THIS IS TIMED! WILL MARK BRAINLIEST IF ANSWER IS CORRECT!
IgorC [24]

Answer:

C

Step-by-step explanation:

A compound interest will make much more money in the long term than simple interest. Moreover the name compound gives you the answer already.

Have a great day <3

8 0
3 years ago
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