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ElenaW [278]
3 years ago
11

The radius of a circle is 8 cm Calculate the circumference of the circle [Use pi r = 3.1]

Mathematics
1 answer:
denis-greek [22]3 years ago
8 0

Answer:

49.6cm

Step-by-step explanation: First you have to find the diameter of the circle by multiplying the radius by 2.

8x2=16

Then multiply 16 by 3.1

16x3.1=49.6


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Need answers ASAP
a_sh-v [17]
We know, Volume of a Sphere = 4/3 πr³
v = 4/3 * 3.14 * 18³
v = 4.186 * 5832
v = 24,416.64 cm³

Volume of a Sphere = 4/3 πr³
v = 4/3 * 3.14 * 12³
v = 4.186 * 1728
v = 7234.56 cm³

Difference = 24,416.64 - 7234.56 = 17182.08

In short, Your Answer would be: 17182.08 cm³

Hope this helps!
6 0
3 years ago
Draw the graph of linear equation 2x - 3y + 7 - 0) and hence find the coordinates of the point when the
kow [346]

Answer:

The line crosses the x-axis at the point (-3.5,0).

8 0
2 years ago
Kallah needs to buy ribbon for a sewing project. The fabric store charges 2 dollars per meter. How much will it cost Kallah to b
Zinaida [17]
There are 100 cm in a meter
$1.50 for 75 cm.
3 0
2 years ago
Read 2 more answers
The statement explains why the ordered pair is a solution to the system of equations. Is the statement true or false? True False
tigry1 [53]

The system of the equation doesn't give the solution at (-3, -6).

<h2>Given to us</h2>
  • -4x+y = 6
  • 5x-y =21

<h3>Equation 1,</h3>

-4x+y = 6

solve for y

-4x+y =6\\y= 6+4x

<h3>Equation 2,</h3>

5x-y =21

substitute the value of y in equation 2,

5x-(6+4x) =21\\5x -6 -4x =21\\5x -4x=21+6\\x = 27

Substitute the value of x in equation 2,

5x-y =21\\5(27)-y =21\\135-y = 21\\-y=21-135\\-y = -114\\y=114

We can see that the solution of the two equations is at (27, 114). Also, it can be verified by plotting the line on the graph.

Hence, the system of the equation doesn't give the solution at (-3, -6).

Learn more about system of equations:

brainly.com/question/12895249

6 0
2 years ago
Pls help I won't be able to watch you tube this summer. Select all the common denominators for 1/4 and 7/10. Explain.
stepan [7]

The common denominators of ¹/₄ and ⁷/₁₀ are; 20 and 40

<h3>How to find the denominator?</h3>

The numerator of a fraction is the top value while the denominator of a fraction is the value at the bottom.

Now, we want to find the common denominator of ¹/₄ and ⁷/₁₀.

The common denominator can't be less than 4 or 10 and so has to be at least two terms that are divisible by 4 and 10. The next two common denominators that are greater than 10 but divisible by both 4 and 10 are 20.

Read more about denominators at; brainly.com/question/12182689

#SPJ1

5 0
1 year ago
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