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OLEGan [10]
3 years ago
6

Greatest common factor of 21,30

Mathematics
2 answers:
Lynna [10]3 years ago
7 0

Answer:

10

Step-by-step explanation:

Mumz [18]3 years ago
3 0

Answer: 3

Factors of 21

1, 3, 7

Factors of 30

1, 2, 3, 5, 6, 10, 15

Step-by-step explanation:

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The ratio of the circumference of the circle to the perimeter of the square is \pi \sqrt{2}:4

<em><u>Explanation</u></em>

Area of the square = 9 inch²

If the side length of the square is a, then

a^2 = 9 \\ \\ a= \sqrt{9} =3

So the side length of the square is 3 inch.

Now as the square is inscribed in a circle, so the diagonal of the square will be diameter of the circle.

Length of the diagonal of square = a\sqrt{2} = 3\sqrt{2} inch

So, the diameter of the circle = 3\sqrt{2} inch

If the radius of the circle is r, then

2r = 3\sqrt{2} \\ \\ r= \frac{3\sqrt{2}}{2}

Circumference of the circle, 2\pi r= 2\pi *\frac{3\sqrt{2}}{2}= 3\pi \sqrt{2} inch

and Perimeter of the square, 4a = (4*3)inch= 12 inch

So, the ratio will be: 3\pi \sqrt{2} : 12 = \pi \sqrt{2} : 4

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3 years ago
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Step-by-step explanation:

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