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3 years ago

What is the approximate circumference of the circle shown below

Mathematics

2 answers:

netineya [11]3 years ago

8 0

Answer:

Step-by-step explanation:

to find circumference of a circle you need to multiple r (7 in here) with 2 and pi

therefore the answer is : 2x7x3 = 42 or 44 approximately

Rina8888 [55]3 years ago

6 0

Answer:

$C\approx44\: cm$

Step-by-step explanation:

1) The Circumference of a Circle is its Perimeter given by $C=2\pi r$ . In this case, signed by a red line.

2) And $\pi \approx3.14$ with the given radius of 7 cm

3) Hence,

$C=2*3.14*7\Rightarrow C\approx44\: cm$

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The points (4,7) and (r. – 5) lie on a line with slope – 3. Find the missing coordinate r

dusya [7]

Answer:

$r=\frac{14}{3}$

Step-by-step explanation:

Set up an equation and solve for r using the formula for slope:

$\frac{5-7}{r-4}=-3\\ \\-2=-3(r-4)\\\\-2=-3r+12\\\\-14=-3r\\\\\frac{14}{3}=r$

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2 years ago

The zoo needs to replace some of the railroad tracks that support their train ride. The total length of the track is 500 feet,

Darya [45]

Answer:

293 feet.

Step-by-step explanation:

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2 years ago

Dance lessons cost $198.75 for 15 classes

zysi [14]

Answer:

331.25

Step-by-step explanation:

First you want to find how much each class cost. So first you want to divide $198.75 by 15 and you will get 13.25. Once you do that you will multiply 13.25 by 25 to get 331.25. Your welcome.

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3 years ago

Simplify -3√2 + 3√8

melamori03 [73]

Answer:

Step-by-step explanation:

-3√2+3√8

=-3√2+3×2√2

=-3√2+6√2

=3√2

3 0

3 years ago

Hi please help thank you

jonny [76]

20
This is because
2x+(6x+20)=180
8x+20=180
8x=160
8x/8=160/8
X=20

7 0

2 years ago