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
DerKrebs [107]
2 years ago
5

kelly wants to build a pacman shaped pool in her back yard pictured to the right (3/4 of a circle). she needs to have a gate aro

und the entire pool because of city requirements. if the radius of the pool is 20 feet, what amount of fencing will she need to go around the pool? use 3.14 for pi and round your final answer to the nearest tenth of a foot.
Mathematics
1 answer:
Andreas93 [3]2 years ago
4 0
You need to find the circumference of the whole circular pool and then subtract from it the arc length that is 1/4 of the circumference.  The circumference formula is C = (3.14)(d), which in our case is 3.14(40) which is 125.6.  Now we need the arc length we need to take away.  1/4 of a circle corresponds to a 90 degree angle, so in the formula for arc length, we have this: \frac{90}{360} (3.14)(40) which equals 31.4.  Now subtract that from the circumference of the whole circle and you get the outside of the circle minus that arc length.  That's 94.2.  But we have to go in the radius times 2 to enclose the pie shaped piece we cut away.  So we have 134.2.  She should've just stuck with enclosing the circle; she would have used less fencing!
You might be interested in
Which characteristics best describe an acute isosceles triangle?
Paladinen [302]
Isocoleese means that 2 sides and hence 2 angles are same measure
acute means that all 3 angles are less than 90 degrees

We can rule out choice I since acut means less than 90

II is a possibility, but it doesn't best describe it

III. that is true, but it doesn't include the isocileese part

IV. that is true, but doesn't include the acute part

not sure, either III or IV
4 0
2 years ago
Read 2 more answers
Which is it? A,B,C or D
kondor19780726 [428]
B I think I don’t really know
7 0
3 years ago
24 is 40% of what number? please show me the steps also.
ella [17]
Answer:

1) 24 is <span>40%</span> of 60

<span><span>2) (.4)100x</span>=24</span>

<span><span>3) 25</span>x=24</span>

<span><span>4) 25</span>x⋅5=24⋅5</span>

<span>5) 2x=120</span>

<span><span><span>6) 2x/</span>2</span>=<span>120/2</span></span>

<span>7) x=<span>60</span></span>

4 0
2 years ago
2x^2+5x-3<br> Show steps
lbvjy [14]
2x^2+(6-1)x-3
2x^2+6x-x-3
2x(x+3)-1(x+3)
(2x-1)(x-1)
7 0
3 years ago
Bennett tried to solve exercise 1 a few different ways. Which of his methods are correct? Of the other methods, which makes the
nasty-shy [4]
The answer is e beac=use it fits

4 0
3 years ago
Other questions:
  • The least common denominator of two fractions is 20. If you subtract the two denominations, you get 1. What are the denominators
    12·1 answer
  • How do you solve 125 - (5-9)^3÷2
    11·1 answer
  • Show that the line integral is independent of path by finding a function f such that ?f = f. c 2xe?ydx (2y ? x2e?ydy, c is any p
    14·1 answer
  • What’s fr the solutions to the quadratic equation 4x^2=64? A. X=16 , -16 B. x=-8, 8 C. x= -4,4 D.x=-2,2
    7·1 answer
  • Tamara earns $8 an hour at her job working 25 hours per week. If 22% of her paycheck goes to taxes, what is Tamara’s monthly cas
    7·2 answers
  • The expected value of a random variable, x, is also called the mean of the distribution of that random variable. Why
    7·1 answer
  • I don't get this plz plz help me thanks
    8·1 answer
  • A bakery sells 5 apple muffins for every 2 bran muffins sold . Which table shows this ratio
    10·2 answers
  • What is -1715/135 squared 3 times
    12·1 answer
  • The two points on the graph are given by the linear function f. a. Use the two points to find the equation that represents the l
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!