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
ad-work [718]
3 years ago
7

A 20° sector in a circle has an area of 21.5π yd². What is the area of the circle? Use 3.14 for pi.

Mathematics
2 answers:
baherus [9]3 years ago
8 0
This would be 21.5π * 360 / 20 yd^2  =  1215.18 yd^2 ( using pi = 3.14)
ziro4ka [17]3 years ago
7 0

Answer:

The area of the circle is 1,215.18\ yd^{2}

Step-by-step explanation:

we know that

The area of a circle is equal to

A=\pi r^{2}

360\° subtends the complete circle of area \pi r^{2}

so

by proportion

Find the area of the complete circle if a  20\° sector has an area of  21.5\pi\ yd^{2}

\frac{x}{360}=\frac{21.5\pi}{20}\\ \\x=360*21.5\pi /20\\ \\x=387\pi \ yd^{2}

387\pi \ yd^{2}=387*3.14=1,215.18\ yd^{2}

You might be interested in
Which could a translation result in? Select all that apply. a figure getting smaller a figure moving up a figure flipping upside
makkiz [27]

Answer:

A figure moving up, a figure moving left, and a figure moving down.

Step-by-step explanation:

Translations are just moving things around in any direction.

8 0
3 years ago
Read 2 more answers
Can someone solve this?
romanna [79]

Answer:

u=4

v=2√3

Step-by-step explanation:

The 30-60-90 triangle theorem states that the shortest side of a triangle is half of the hypotenuse, so 2*2=4. So, the hypotenuse, <em>u</em>, is 4.

The longest leg is √3 times greater than the shortest leg, so 2*√3=2√3. So, the longest leg, <em>v</em>, is 2√3.

4 0
2 years ago
what are a) the ratio of the perimeters and b) the ratio of the areas of the larger figure to the smaller figure? the figures ar
Alla [95]
We know that

a) find <span>the ratio of the perimeters 
</span><span>
the ratio of the perimeters is equal to the scale factor
</span>scale factor=26/6-----> 13/3
the answer Part a) is
the ratio of the perimeters is 13/3

b) find <span>the ratio of the areas of the larger figure to the smaller figure
we know that
area larger figure=[scale factor]</span>²*area smaller figure
scale factor²=area larger figure/area smaller figure

the ratio of the areas of the larger figure to the smaller figure is equal to scale factor squared
scale factor²=(13/3)²----> 169/9

the answer Part b) is
169/9

the complete answer is
13/3 and 169/9
6 0
3 years ago
Three eighths divided by six sevenths equal
sveticcg [70]
3/8*7/6

21/48 is the answer
8 0
3 years ago
Some save me please will name brainliest if the answer is correct
Papessa [141]

Answer:

-5, -9

Step-by-step explanation:

This point is located in the fourth quadrant. When rotated at 270 degrees, it'll end up in the third quadrant. The rules for this quadrant is that both the x and y value will be negative.

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the general form of the equation for thr given circle centered at O (0,0)
    12·2 answers
  • A cyclic quadrilateral is shown. x:y=3:7. work out the size of angle z
    10·1 answer
  • According the bar graph above, which month saw the lowest number of student ticket sales?
    6·1 answer
  • Solve for x. 8x2−3=2
    13·1 answer
  • Round 99.20 to the nearest ten
    11·2 answers
  • What value is equivalent to 4 + 3(10 − 2 3)? 3 means the third power.
    5·2 answers
  • There are 9 acts in a talent show.
    8·2 answers
  • At homecoming, 125 tickets where sold. Tickets purchased for homecoming cost $20.5 without an activity card, and $15.75 with an
    5·1 answer
  • Geometry help please
    14·1 answer
  • A math question I need help in
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!