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katrin2010 [14]
3 years ago
7

If I have a circle that is 12 in in diameter and it's cold and a half and then folded in half again what is the area of the resu

lting shape and what is how do I write out the equation
Mathematics
1 answer:
nika2105 [10]3 years ago
3 0

Answer:

<h2>A= πr^2/4</h2>

Step-by-step explanation:

Step one:

given data

diameter of circle= 12 in

the radius is r=d/2=6in

the area of the circle is

A=πr^2

A=3.142*6^2

A=3.142*36

A=113.1in^2

If the circle is folded in half, the area will be A/2= 113.1/2= 56.55in^2

In the corresponding shape is folded again the area is A/4= 28.3in^2

<u>The expression for the last shape is </u>

<u>A= πr^2/4</u>

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Answer:

809 km²

Step-by-step explanation:

I can split this into 3 rectangles. One is 25 by 17, another is 24 by 13, and the last one is 6 by 12. (I had gotten 13 for the second rectangle because 25 - 12 = 13.)

(25 * 17) + (24 * 13) + (6 * 12) <em>{17 is the first number after a multiple of 4 (16). As a result, 25 by 17 will end in "25." 25 by 17 is 425.}</em>

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425 + 312 + (6 * 12) <em>{6 by 12 is 72.}</em>

425 + 312 + 72 <em>{From left to right, add 425, 312, and 72 to get 809}</em>

737 + 72

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The area of this figure is 809 km².

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