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lbvjy [14]
4 years ago
6

If the radius is 6371, what is the circumference?

Mathematics
2 answers:
olga2289 [7]4 years ago
7 0
The formula to find the circumference is pi*radius^2. Since your radius is 6371, the radius squared is 40589641 and that times pi is 127451473. That is your circumference
Anni [7]4 years ago
3 0
In order to find the circumference of a circle, you must use the formula c=2*\pi*r. 

Since you're already given the radius, all you have to do is use the formula and do 2 times 3.14 times 6371 and you get 40009.88 as your circumference. 

Would love brainliest and hope that helps! 
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How to use the Pythagorean Theorem
Snowcat [4.5K]

a²+ b² = c² is the formula for pythagorean theorem.

it is used to find out the hypotenuse(the side opposite the 90° angle) of a right angled triangle.

the two sides adjacent to the 90° angles are 'a' and 'c'. the theory is that if you add the squares of a and b, the hypotenuse is equal to c².

7 0
3 years ago
What is the 31st term of the arithmetic sequence for 1.77, 1.92,2.07
natita [175]

Given that sequence 1.77, 1.92,2.07 is arithmetic sequence.

Using that we have to find 31st term.

To find that we can use nth term formula of arithmetic sequence which is given by:

t_n=a_1+(n-1)d

where n is the number of term so n=31

t_n indicates nth term

a_1 is the first term so a_1=1.77

r is the common difference which is given by difference of consecutive terms

then r=1.92-1.77=0.15

Now plug these values into above formula


t_n=a_1+(n-1)d

t_{31}=1.77+(31-1)*0.15

t_{31}=1.77+(30)*0.15

t_{31}=1.77+4.5

t_{31}=6.27


Hence final answer is 6.27.

8 0
4 years ago
Given: a and b are parallel and c is a transversal.
Vedmedyk [2.9K]

The missing words to complete the proof are respectively; Vertical Angles; Corresponding angles; Transitive Property

<h3>How to prove congruent angles?</h3>

The image of the transversal line is attached.

1) We know that lines a and b are parallel and that line c is a transversal because that is given.

2) We can tell that angles 2 and 5 are congruent because vertical angles are congruent.

3) Angles 5 and 7 are congruent because corresponding angles by parallel lines cut by a transversal are congruent.

4) Therefore, angles 2 and 7 are congruent based on the transitive property.

Read more about Congruent Angles at; brainly.com/question/1675117

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3 0
2 years ago
Find the length of BC, in simplest radical form.
zubka84 [21]

9514 1404 393

Answer:

  BC = 16 +12√3

Step-by-step explanation:

In the attached, we see that ∆ABE is a 30°-60°-90° triangle with AB the short side and BE the hypotenuse. Then BE = 2·AB = 12√3.

EC is the side opposite AD in parallelogram ADCE, so is the same length, 16.

The length BC is ...

  BC = EC +BE

 BC = 16 +12√3

8 0
3 years ago
Find the standard form of the equation of the circle with endpoints of a diameter at the points (9,2) and (-7.4).
kicyunya [14]

Answer:

(x-1)²+(y-3)²=65

Step-by-step explanation:

the common view of the equation of a circle is:

a) (x-a)²+(y-b)²=r², where (a;b) - the centre of the required circle, r - the radius of the required circle;

b) using the coordinates of the endpoint of the given diameter it is possible to calculate the coordinates of the centre of the required circle and its radius²:

the coordinate x of the required circle is: (9-7)/2=1;

the coordinate y of the required circle is: (2+4)/2=3.

the radius² of the required circle is:

r²=0.25*[(9- -7)²+(2-4)²]=0.25*260=65.

c) after the substitution the values of 'a'; 'b' and 'r²' into the common equation of the circle:

(x-1)²+(y-3)²=65.

PS. additional: the given points (9;2) and (-7;4) belong to the final equation, if to substitute their coordinates into it.

The suggested way of solution is not the only one.

5 0
3 years ago
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