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
OverLord2011 [107]
3 years ago
9

When finding the perimeter of a circle and half circle, what's the usual formula? ​

Mathematics
2 answers:
d1i1m1o1n [39]3 years ago
6 0
Or an easier way is 2* pi* r(radius)
Shkiper50 [21]3 years ago
4 0

Answer:

The perimeter of a semicircle includes the arc and the diameter. Here are some formulas that you can use.

Step-by-step explanation:

   P = C / 2 + d

       where C is the circumference of the whole circle

   P = π r + 2r

       where r is the radius

       P = (2 + π) r

   P = (d π / 2) + d

       P = d π / 2 + 2 d / 2

       P = (d π + 2 d) / 2

       P = (2 + π) d / 2

Found at this website here: https://www.quora.com/What-is-the-formula-for-the-perimeter-of-a-semicircle

Hope this Helped! Good Luck!

You might be interested in
A literal equation has only one variable. True False
Zanzabum

Answer:False

Step-by-step explanation:

5 0
2 years ago
An equilateral triangle has a perimeter of 48 cm. What is the area?
KiRa [710]

Answer:

A=64\sqrt{3}\ cm^2

Step-by-step explanation:

we know that

An <u><em>equilateral triangle</em></u> has three equal sides and three equal interior angles (each interior angle measure 60 degrees)

so

The perimeter is equal to

P=3b

where

b is the length side of the equilateral triangle

we have

P=48\ cm

substitute

48=3b

solve for b

b=48/3\\b=16\ cm

Find the area

The formula of area applying the law of sines is equal to

A=\frac{1}{2}b^2sin(60^o)

substitute the value of b

A=\frac{1}{2}(16)^2sin(60^o)

sin(60^o)=\frac{\sqrt{3}}{2}

A=\frac{1}{2}(16)^2(\frac{\sqrt{3}}{2})

A=64\sqrt{3}\ cm^2

6 0
2 years ago
Brianna just finished a great meal at a restaurant in Wisconsin. The sales tax in Wisconsin is 5%, and it is customary to leave
emmainna [20.7K]
15% = 0.15
 tip = 15 * 0.15 = 2.25

5% = 0.05
tax = 15 * 0.15 = 0.75

 total = 15 + 0.75 + 2.25 = $18

7 0
3 years ago
A linear regression is done on data the line of best fit is y= 1.25x-6.25. What is the residual for the point (1,1)?
Damm [24]

Answer:

6

Step-by-step explanation:

Find the predicted y value when x=1:

\hat{y}=1.25x-6.25\\\hat{y}=1.25(1)-6.25\\\hat{y}=1.25-6.25\\\hat{y}=-5

Find the residual:

\text{Residual}=\text{Actual Value}-\text{Predicted Value}\\\text{Residual}=y-\hat{y}\\\text{Residual}=1-(-5)\\\text{Residual}=1+5\\\text{Residual}=6

Because our residual is positive, this is an indicator that our predicted y value is too low.

6 0
2 years ago
Please help I'll mark brainliest
Lynna [10]

Answer:

A , line of equation A is steeper

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • Pentagon RSTUV is circumscribed about a circle. What is the value of x if RS = 6, ST = 9, TU = 7, UV = 15, and VR = 14?
    6·1 answer
  • Whats 4 squred - 11x + 6 =0
    7·1 answer
  • Simplify <br><br> -2.4 divided by 0.03 <br><br><br><br> -80<br><br> -23.7<br><br> -2.37<br><br> -8
    14·1 answer
  • Simplify the expression:
    12·1 answer
  • A woman stands 15 ft from a statue. She looks up at an angle of 60° to see the top of the statue. Her eye level is 5 ft above th
    15·1 answer
  • What's two ratios that are equivalent to 4:11
    6·2 answers
  • HELP ASAP BRAINLIEST FOR FIRST CORRECT ANSWER In triangle ABC, m∠A=(5x−10)∘, m∠B=(12x)∘, and the exterior angle at C is (16x)∘.
    10·2 answers
  • Thanks you to those who have been helping me with my math homework much appreciation have these points as gratitude!
    9·2 answers
  • Kiran and Mai are trying to figure out if this equation is an identity, what do you think
    15·1 answer
  • Given that x = 6 and y = -4, evaluate the following expression.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!