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
jenyasd209 [6]
3 years ago
6

The semi-circle has a diameter of 8. What is the perimeter of the semi-circle?​

Mathematics
2 answers:
skad [1K]3 years ago
6 0

Answer:

roughly 12.56 units

Step-by-step explanation:

Since the perimeter of a circle is 2*pi*r, we can divide it by two or multiply by half in order to find the perimeter of a semicircle

half of the diameter is the radius, so 8/2 =4, r=4

Plug in what we know...

C=2*pi*4

Solve

2*3.14*4

25.12

divide by 2

25.12/2=12.56

12.56 units is the perimeter

morpeh [17]3 years ago
3 0

Answer:

Approx. 20.566 units

Step-by-step explanation:

Find the circumference of the whole circle first by doing:

C = 2πr

r = 4 (8 divided by 2)

C ≈ 25.133

Then divide that by two because a semi-circle is half a circle:

12.566

Then add 8 (diameter) to that number for the open side.

Hope this helps :)

You might be interested in
(6x2 - 2x) + (5x-7)
Black_prince [1.1K]

Answer:

D. 6x2 + 3x - 7

Step-by-step explanation:

7 0
2 years ago
A spinner with 10 equally sized slices is shown below. (3 slices are blue, 2 are yellow, and 5 are rec the probability that the
Ainat [17]

Answer:

1/2

Step-by-step explanation:

Blue + yellow = 3 + 2   = 5     out of 10 slices

     5 out of 10   = 5/10 = 1/2

5 0
2 years ago
3m+n=10<br>5m-2n=2<br>what is the answer for this one ​
svlad2 [7]

Answer:

m = 2

n = 4

Step-by-step explanation:

Ok so to solve this, you want to get it so there is only one variable and then solve that equation. To do this, you can start by doing:

3m + n = 10

multiply both sides by 2

6m + 2n = 20

now, in both of your equations you have 2n so you can add the two equations:

6m + 2n = 20

+ 5m - 2n = 2

11m = 22

divide both sides by 11

m = 2.

Now, plug this value into the original equation, 3m + n = 10:

3 * 2 + n = 10

6 + n = 10

subtract 6 from both sides

n = 4

6 0
3 years ago
-2.7f + 0.3f - 16 - 4=
suter [353]

Answer:

-2.4f or -8 1/3

Step-by-step explanation:

I am not sure what should be at the end of the equal sign but if it is to simplify it would be -2.4f-20

If you want to solve then you get -2.4f=20 so f=-20/2.4 which equal to -8 1/3

3 0
3 years ago
PLEASE HELP NOW ASAP!!!
IceJOKER [234]

She used the associative property which should only be used with positive numbers (sorry if it isn't the answer you're looking for)

3 0
3 years ago
Read 2 more answers
Other questions:
  • The diameter and height of this cylinder are equal to the side length, S, of the cube in which the cylinder is inscribed. What i
    13·1 answer
  • Find the exact value of the expression.<br> tan( sin−1 (2/3)− cos−1(1/7))
    7·1 answer
  • Twice the difference of a number and 4 is at least 29
    11·1 answer
  • Write 6,219 in expanded<br> form.
    9·2 answers
  • Write 6.25 as a fraction 
    10·2 answers
  • What is the answer to -10+(-3)
    5·2 answers
  • Determine whether each relationship represented by the
    9·1 answer
  • The breaking strengths of cables produced by a certain manufacturer have a mean, , of pounds, and a standard deviation of pounds
    15·1 answer
  • A spinner is divided into 9 equal parts. What is the probability of it landing on an even number?
    11·1 answer
  • What is the coefficient of the second term of the polynomial? (In other words, what is B?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!