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
noname [10]
3 years ago
8

*PLEASE ANSWER* What is the area of minor sector AOB?

Mathematics
1 answer:
scoray [572]3 years ago
3 0
<h3>Answer: Approximately 13 square units (choice B)</h3>

===========================================================

Explanation:

The given reflex angle is 215 degrees. A reflex angle is anything over 180 degrees, but less than 360. Subtract 215 from 360 to get the measure of angle AOB

angle AOB = 360 - 215 = 145

angle AOB = 145 degrees

We'll use this later.

Now find the area of the full circle. Use the formula A = pi*r^2. The radius is r = sqrt(10) which can be found through the distance formula or the pythagorean theorem. You want to find the length of either OA or OB to get the radius.

The area of the circle is

A = pi*r^2

A = pi*(sqrt(10))^2

A = 10pi

This is the exact area of the full circle, but we want just a fractional portion of it. Specifically we want the pie slice that is formed by angle AOB

area of sector AOB = [ (angle AOB)/360 ] * (area of full circle)

area of sector AOB = (145/360)*10pi

area of sector AOB = 145pi/36

area of sector AOB = 145*3.14/36

area of sector AOB = 12.647 approximately

area of sector AOB = 13 square units approximately, after rounding to the nearest whole number

You might be interested in
Expand and simplify 2(5x - 1) – (2x - 5) ​
horrorfan [7]

Answer:

2(5x - 1) – (2x - 5)

=2(5x−1)−2x+5

=10x−2−2x+5

=(10x−2x)+(−2+5)

=8x+3

Step-by-step explanation:

3 0
2 years ago
The sum of one fifth of a number and three is equal to half of the number. What is the number?
Veseljchak [2.6K]

see picture for steps

 x= 10

7 0
3 years ago
PLEAS HELP 25 POINTS AND BRAINLEIST
netineya [11]

Answer:

If it really is out of ten shots the answer should be 6 out of 10.

Step-by-step explanation:

12/30 divided by 3 is 4/10

If she had an increase of 50%, the answer is 6 out of 10 shots.

4 0
3 years ago
Read 2 more answers
What is 2/7 + 3/14?In simplest form
timurjin [86]

Answer:

1/2

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which expression is equivalent to 4(3-6x)+x. Explain your reasoning. A.)-11x B.)-5x+12 C.)-23x+12 D.)37x
diamong [38]
C) -23x + 12 .. You're going to multiply the 4 to what's inside the parenthesis. So you'll get 12-24x+x Then just add the like terms which are the x's. 12-23x or -23x+12 
5 0
2 years ago
Other questions:
  • The figure shows a planetarium’s viewing room, which is in the shape of a hemisphere. The diameter of the hemisphere is 50 feet.
    13·2 answers
  • In a recent poll^1 of 1000 American adults, the number saying that exercise is an important part of daily life was 753. Use stra
    14·1 answer
  • 1.75 as a improper fraction and mixed number
    13·2 answers
  • (−14x^3y^3+4x^5 y6)÷(2x^4y^5)
    6·1 answer
  • In a class the ratio of boys to girls is 2:1. There are 8 girls.<br> Work out the number of boys.
    11·1 answer
  • Please help with this question
    9·1 answer
  • What is the measure of <br> please show step by step instructions.
    8·2 answers
  • Which data table represents a function?
    13·2 answers
  • Given: g ∥ h and ∠2 ≅ ∠3
    9·2 answers
  • OMG PLZ HELP ME PLSS ILL GIVE BRAINLKEST NO ONE IS ANSWERING ME PLZ PLZ IM BEGGING YOU
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!