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
mario62 [17]
3 years ago
10

What is the area of a semicircle with a diameter of 21.5

Mathematics
1 answer:
denis-greek [22]3 years ago
7 0

Area of a circle = PI x R^2

r = 1/2 diameter

r = 21.5/2

r = 10.75

Area of circle = 3.14 x 10.75^2 = 3.14 x 115.5625 = 362.86625 square units.

A semicircle is half a circle:

Area of semicircle = 362.86625 / 2 = 181.433125 square units (round the answer as needed).

You might be interested in
Jillian and her friend went shopping. They were both looking for some new CD's. Jillian went to Music Matrix and spent $25.56 on
Vadim26 [7]

Answer:

Her friend got the better deal.

Step-by-step explanation:

For Jillians equation look at

$22.56/4 = $6.39 per CD

For her friends equation look at

$18.45/3 = $6.15 per CD

Jillian's friend got the better deal because she paid less per CD as shown in the equations above.

6 0
3 years ago
Help very fast please help me
Irina18 [472]

Find the discount price and subtract from the total to find the sale price.

To find the discount price, multiply 90 b 40% (convert 40% into decimal)

90 x 0.4 = 36

Next, subtract the discount from the total to find the sale price.

90 - 36 =  54

So, the sale price is <u>$54</u>.

6 0
3 years ago
Find the greatest common factor
Vikentia [17]

Answer:

3x^2y^2

Step-by-step explanation:

I think:

3*2*x*x*x*y*y*y*y

3*3*x*x*y*y

3*6*x*x*x*y*y

They all have 3x^2y^2 in common.

6 0
3 years ago
8x^-9+(-3x^-3y-2)(5/x^6y-2)
DaniilM [7]

8x^{-9}+(-3x^{-3}y^{-2})(\frac{5}{x^6y^{-2}})

the first step is to deal with the negative exponents, which causes numbers to go to the other side of the fraction

8x^{-9}+(-3x^{-3}y^{-2})(\frac{5}{x^6y^{-2}})

goes to

\frac{8}{x^9}+(\frac{-3}{x^3y^2})(\frac{5y^2}{x^6})

now we can simplify the multiplied terms

\frac{8}{x^9}+(\frac{-15}{x^9})

Now that we have common bases, we can add the 2 fractions together to get

\frac{-7}{x^9}

8 0
3 years ago
Determine the value of x in the given diagram, when a║b.
mixer [17]
155 degrees is the answer
7 0
3 years ago
Other questions:
  • Problem Page
    15·1 answer
  • Find the equation of the line that is parallel to the given line and passes through the given point
    12·1 answer
  • What is the approximate volume of a cylinder with a height of 3 ft and a radius of 4 ft?
    11·2 answers
  • I've included two questions. Hopefully you can help me with both. Thanks!
    9·1 answer
  • The length of a new rectangular playing field is 4 yards longer than quadruple the width. If the perimeter of the rectangular pl
    6·1 answer
  • Evaluate csc (3pi/14) and cot (5pi/12) using a calculator.
    8·1 answer
  • Maria bought a bag of marbles. There were twice as many purple ones as red ones. There were 93 marbles in all. How many of each
    7·2 answers
  • What is the result of substituting for y in the bottom equation?
    10·2 answers
  • Please help with math problem​
    9·2 answers
  • Which equation has no solution? *
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!