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iragen [17]
3 years ago
11

If the radius of the circle is 4 cm, find its circumference. [Use 3.14 for π.]

Mathematics
2 answers:
vlabodo [156]3 years ago
7 0

Answer:

B.25.12

Step-by-step explanation:

Solution

C=2πr=2·π·4≈25.13274cm

Hope this helps!


weeeeeb [17]3 years ago
6 0

Answer:

C =25.12 cm

Step-by-step explanation:

Circumference of a circle is given by

C = pi d

We know that d = 2r  (twice the radius)

C = pi *2r

Substituting in

C = pi*2*4

C = pi*8

Using 3.14 for pi

C = (3.14)*8

C =25.12 cm

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Answer:

-3g-4

Step-by-step explanation:

(-2g+7)-(g+11)= -2g+7-g-11= -3g-4

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(17 PTS)<br> GEOMETRY QUESTIONS, PLEASE HELP!
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14. 
Angles 4 and 6 are supplementary, because they are on the same line. Supplementary angles add up to 180 degrees, and a line must be 180 degrees.

15.
Angles 1 and 8 are congruent, because they are alternate exterior angles

16.
m = y2 - y1 / x2 - x1
m = 7 - 2 / 4 - 5
m = 5 / -1
m = -5

17.
m = 3 - 3 / 7 - (-5)
m = 0 / 12
m = 0

18.
m = 1 - (-2) / 5 - (-4)
m = 3 / 9
m = 1/3

19.
A = (0, 3) - B = (3,0)
m = 0 - 3 / 3 - 0
m = -3 / 3
<em>m = -1</em>
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m = 2 - (-2) / 4 - 0
m = 4 / 4
<em>m = 1</em>
Perpendicular, because the slopes are opposite reciprocals.

20.
E = (1, 2) - F = (0, 0)
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m = -2 / -1
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21.
I = (0, 1) - J = (2, -4)
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22.
M = (-2, 2) - N = (2, 2)
Horizontal line
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</em>23.
Angle 2 is congruent to angle 1 because of the alternate exterior angle theorem.
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Assume that thermometer readings are normally distributed with a mean of degrees and a standard deviation of 1.00degrees C. A th
Andrew [12]

Answer:

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Step-by-step explanation:

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