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
denpristay [2]
3 years ago
10

OAB is a sector of a circle with centre O and radius 8 cm.

Mathematics
1 answer:
max2010maxim [7]3 years ago
4 0

Answer:

The perimeter of the sector is :30.5 cm

Step-by-step explanation:

Mathematically, we have the area of the sector as;

e/360 * pi * r^2

r is 8 cm

so we have

58 = e/360 * pi * 8^2

58/64 * 360/pi = e

e = 103.85

To get the perimeter,

we have length of the arc plus 2r

Length of the arc is;

e/360 * 2 * pi * r

add 2 r;

e/360 * 2 * pi * r + 2r

so we have

103.85/360 * 2 * pi * 8 + 2(8)

= 14.5 + 16

= 30.5 cm

You might be interested in
What is the exponet of 10×10
Ivanshal [37]
The exponent of 10x10 is 100

5 0
3 years ago
Read 2 more answers
Please help me with this ​
zzz [600]

Answer: Z'(-7;8)

suppose the coordinates of Z' is Z'(x,y)

we have:

\left \{ {{x=8.cos90-7.sin90=-7} \atop {y=8.sin90+7.cos90=8}} \right.

=> Z'(-7;8)

Step-by-step explanation:

3 0
3 years ago
W÷9=9-8<br> what is the answer to this equation
saul85 [17]

Answer:

9

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What is the value of 25 – 5 × 8 – 4?
Galina-37 [17]

Answer:

25- 40 - 4 = -19

8 0
3 years ago
Read 2 more answers
You deposit $5000 in an account earning 7.5% simple interest . How long will it take for the balance of the account to be $6500
GREYUIT [131]
Since this is a problem of simple interest, then the interest earned will be based always on the principal amount which is 5000. So assuming that, lets also assume that the duration to get interest will be in years since that is the most commonly used duration anyway. So first, let's multiply 5000 with 0.075 to get the interest for the first year. So we will have 375. This means that we will be getting 375 interest every year. We can do trial an error method to get the number of years that will yield us to 6500. Through that, I was able to get 4 years. So 4 times 375 equals  1500 plus the original balance of 5000. It will take 4 years before your balance reaches 6500
7 0
3 years ago
Other questions:
  • Which expression is equivalent to 36^-1/2
    12·2 answers
  • 26 centimeters per second is equal to how many meters per minute
    7·1 answer
  • Vicky made some purchases at the sunflower market. she bought strawberries for $3.50, carrots for $2.25 and a bouquet of flowers
    8·2 answers
  • Kate walks a half a mile to the library how many miles did she walke
    10·2 answers
  • 5x2-2y when x=2 y=3 what is the best answer
    14·2 answers
  • Convert 86 degrees Fahrenheit to degrees Celsius?
    10·2 answers
  • Which of the following matches a quadrilateral with the listed characteristics below?
    14·1 answer
  • 9x+3x-10=3(3x+x) identity or solution
    7·2 answers
  • What is the least integer greater than -3.7
    10·1 answer
  • The area of the triangle shown is 40.0 centimeters squared What is the height of the triangle?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!