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andre [41]
3 years ago
10

A caircular fountian has a circumference of 21 feet. Which expression can be used to find the diameter of the fountian in feet?​

Mathematics
1 answer:
KiRa [710]3 years ago
5 0

Answer: 21 = 2\pi r

Step-by-step explanation:

To find the circumference of a circle, you can use 2\pi r. You can set this equal to 21 (feet). The equation to solve at this point would be 21=2\pi r.

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Help please ........
Licemer1 [7]

The answer would be A) 2,640.

In order to find this we must first find an amount of people per square feet. Since we are given that 10 people fit in a 5x5 square, we know that 10 people fit in 25 square feet. This will be the basis for our final calculation.

Now we need to find how many square feet we have. Since it is a quarter of a mile long, we'll divide the number of feet in a mile by 4.

5,280/4 = 1320.

Now we take the length and multiply it by the width, which is 5ft.

1320 * 5 = 6,600 square feet.

So we now know the size of the crowd. We can use that and multiply it by the factor that we found at the start to find the number of people.

6,600 square feet * 10 people/ 25 square feet = 2,640 people.

8 0
4 years ago
Chart:
True [87]
I would say B because it only makes since, colleges are looking for whats better in students and you will also work in groups also. So i would go with B :)
5 0
3 years ago
6
IgorC [24]

Answer:

12 less than or equal to 2

Step-by-step explanation:

7 0
3 years ago
What is -1/4 as a decimal? help me!!
olga nikolaevna [1]

Answer:

- 0.25

Step-by-step explanation:

Sine -1/4 is a fraction, you can think of it as quarters in this case. there are 4 quarters in a dollar. 1/4 = 25/100.  

8 0
3 years ago
HELP!!!!<br> 2x+y= 20<br> 3x+4y= 40
bagirrra123 [75]

Answer:

(8,4)?

Step-by-step explanation:

3 0
3 years ago
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