Answer:
π/2 : 1 or π : 2
Step-by-step explanation:
In the attachments I have a picture of a square inscribed in a circle.
Call the side of the square a. Therefore, the area of the square is a^2.
We can also see that the diagonal of the square is the circle's diameter.
Using the Pythagorean Theorem we find that the diagonal/diameter of the circle is a√2. Thus the radius is that divided by 2, which is (a√2)/2.
We also know that the formula for a circle's area is πr^2, so the area of the circle is π((a√2)/2)^2 --> π(a^2)(2)/4 --> π(a^2)/2.
Hence the ratio of the circle to the square is π(a^2)/2 to a^2 which is π/2 to 1 or π to 2.
To find the cost of one book you need to divide 40.20 by 3.
40.20/3= 13.4
Dont forget the dollar sign - $13.4
Cost of one book is $13.4
Step-by-step explanation:
Given
Radius (r) = 13 mm
Area of the circle
= πr²
= 3.14 * 13 *13
= 530.66 mm²
Hope it will help :)
Dilation alters the length of the sides of a triangle but the angles remain the same
So cos x will still be 8/17

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