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
The price of a stereo was
nikdorinn [45]

Answer:

25%

Step-by-step explanation:

price remixed = 300-225=75$

discount % = (75/300)*100 = 25%

8 0
2 years ago
Read 2 more answers
A person spends 1/5 of his salary on rent, 3/7 on food, 1/3 on other expenses and saves the rest. If she earns $21,000 per month
sukhopar [10]

Answer:

$9600 saving / year

Step-by-step explanation:

1/5 of $21000 = 21000 / 5 = $4200 / month on rent

3/7 of $21000 = (21000 / 7) x 3 = $9000 / month on food (shocking right :) food is expensive)

1/3 of $21000 = 21000 / 3 = $7000 on other expenses / month

total savings/month = salary/month - rent/month - food/month - other expenses/month

total savings/month = 21000 - 4200 - 9000 - 7000

total savings/month = $800

<u><em>BUT</em></u> the question asks for savings per year. therefore, we must multiply the savings per month by total months per year (12)

800 x 12 = $9600

the person's total savings per year, with a salary of $21000 per month, is equal to $9600 per year

3 0
1 year ago
223,682 divided by 42 (standard algorithm) im so stuck
julia-pushkina [17]

Answer:

its 5325.76190476

or 5325.8 if you want to round it

Step-by-step explanation:

3 0
2 years ago
Order the numbers from least to greatest -20 3/4 -14 3/4 -1/4 and -15 1/2​
FinnZ [79.3K]

Answer:

-20 3/4, -15 1/2, -14 3/4,

Step-by-step explanation:

8 0
3 years ago
Divide thirty-one point five by ten
Nutka1998 [239]
3.15 will be your answer i am very sure of that
5 0
3 years ago
Read 2 more answers
Other questions:
  • Mom and dad have four daughters each daughter has a brother
    9·2 answers
  • Missing #in this sequence. 1,16,_,100,169
    12·1 answer
  • 34, 41, 25, 43, ? : mean of 38
    11·2 answers
  • Determine if the two two equations have the same solution why or why not??
    14·1 answer
  • This week Allison bought 108 bunches of carnations and 96 bunches of roses from the supplier. Let c represent the number of carn
    13·1 answer
  • A circle has a diameter with endpoints (1,6) and (-3, -6). Find its area.
    6·1 answer
  • Which expressions are equivalent to 4m+12. Chose all that apply
    5·1 answer
  • Need this ASAP thanks
    6·1 answer
  • The table is a linear function k(x). If k(x) = mx+b what is the value of m + b?​
    11·1 answer
  • Helpp ill mark u as brain list​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!