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
slava [35]
4 years ago
10

HELP! I put the formula but I don’t know the radius

Mathematics
1 answer:
ahrayia [7]4 years ago
8 0

Answer:

C. 8,624

Step-by-step explanation:

recall that the formula for circumference is

Circumference = 2πr  ( = given as 85 meters)

hence,

85 = 2πr

r = 85/(2π)

given h = 15m

volume of cylinder

= πr²h

= π (85/2π)² 15  (using calculator and assuming π = 3.14)

= 8628.58

Comparing with the choices, the closest choice (within rounding error) is C. 8,624

You might be interested in
Examples of quadrilateral and it's features​
IrinaK [193]
A quadrilateral is a 4 sided shape. Examples could include squares, trapezoids, rectangles, and rhombus.
6 0
3 years ago
Read 2 more answers
Write 1/32 as a power of 2
Aleksandr [31]
             <span> 32=2^5

^ = "to the power of"

1/32=1/2^5

1/2^5=2^-5

so

1/32=2^-5 </span>
3 0
3 years ago
Read 2 more answers
Please help quickly!
Jet001 [13]
Find the volume

volume=hpir^2
d/2=r=16/2=8


1.
hmm, ok, after 1/2 hour or 30 mins
30/5=6
6*1=6, 6 cubic meters
volume=6, solve for height
v=hpir^2
but r=8 all the time, solve for h
6=hpi8^2
6=hpi64
6/(64pi)=h
the depth is \frac{3}{32 \pi} meters or about 0.02984155182973037545666570563235 meters
the depth is about 0.03 meters



2. the full volume is
v=6pi8^2=6pi64=384pi
1 cubic meter every 5 mins so
384pi/1 is how many 5 mininute intervals
so 384pi times 5=total minutes=1920pi minutes or about 6031.8578948924030178482752958966minutes
7 0
3 years ago
Please helpppppppppppppppppppppppp
slega [8]

Answer:

the distributive property

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The data below are the temperatures on randomly chosen days during the summer and the number of employee absences at a local com
s2008m [1.1K]

Answer:

The critical region is t ≥ t(0.025, 7) = 2.365

Since the calculated value of t= 18.50249 falls in the critical region we reject the null hypothesis and conclude that there is sufficient reason to support the claim of a linear relationship between the two variables.

Step-by-step explanation:

We set up our hypotheses as

H0: β= 0   the two variable X and Y are not related

Ha: β  ≠ 0. the two variables X and Y are related.

The significance level is set at α =0.05

The test statistic if, H0 is true, is  t= b/s_b

Where   Sb =S_yx/√(∑(X-X`)^2 )

Syx = √((∑(Y-Y`)^2 )/(n-2))

In the given question we have the estimated regression line as y= 0.449x - 30.27

X Y X2         Y2      XY

72 3 5184 9    216

85 7 7225 49    595

91 10 8281 100      910

90 10 8100 100      900

88 8 7744 64       704

98 15 9604 225      1470

75 4 5625 16       300

100 15 10000 225       1500

<u>80 5 6400 25        400         </u>

<u>∑779 77 68163 813 6995</u>

Now finding the variances

∑(Y-Y`)^2  = ∑〖Y^2- a〗 ∑Y- b∑XY

                      = 813 – (- 30.27)77 - 0.449(6995)

                       = 813+2330.79 – 3140.755

                       = 3.035

∑(X-X`)^2 =  ∑X^2  – (∑〖X)〗^2 /n

                   = 68163 – (779)2/9

                    = 736.22

Syx = √((∑(Y-Y`)^2 )/(n-2))  = √(3.035/7) = 0.65846 and

Sb =S_yx/√(∑(X-X`)^2 ) = (0.65846  )/27.13337 = 0.024267

t= b/s_b  = 0.449/ 0.024267 = 18.50249

The critical region is t ≥ t(0.025, 7) = 2.365

Since the calculated value of t= 18.50249 falls in the critical region we reject the null hypothesis and conclude that there is sufficient reason to support the claim of a linear relationship between the two variables.

Download docx
6 0
3 years ago
Other questions:
  • Solve for m: -14m = -28
    11·1 answer
  • a frame is 18.6 in tall and 1.5 in wide. if it is reduced to a height of 6.2 in, then how wide will it be?
    15·1 answer
  • 10. 5(3-9b) = 3(-15b – 2)
    13·1 answer
  • What is 1815 + 0230 military time?
    12·2 answers
  • In 2003 Nebraska had a population of 1,739,291 while Kansas had a population of 2,723,507. What was their combined population?
    14·1 answer
  • A car manufacturer sent out survey cards to owners who had purchased new cars. The survey card only had boxes to check for repli
    13·2 answers
  • 1+1+1+1+1+1+1+1+1+1+1+1
    9·2 answers
  • Find the values of x and y in the diagram.
    12·1 answer
  • Find the area of the shaded sector
    7·1 answer
  • Adiciones racinales 1/7+3/7+2/7
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!