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djverab [1.8K]
3 years ago
6

If the scale factor of the model train to a real train is 1:43, what is the length of the model if the actual train is 645 inche

s? The length of the model would be
Mathematics
1 answer:
OleMash [197]3 years ago
6 0
The answer is 15 inches.
To get the answer divide the real length by 43.
645÷43=15
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The area of flying disk is 452.16 square centimeters

Step-by-step explanation:

The disc is in circular shape so we will use the formulas for circle in this question.

Given

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We have to find the area of the disc for which we have to find the radius first.

Let r be the radius

Then

Circumference is given by:

C=2\pi r

putting the values

75.36 = 2*3.14*r\\75.36 = 6.28r

Dividing both sides by 6.28

\frac{6.28r}{6.28} = \frac{75.36}{6.28}\\r = 12\ cm

The area of circle is given by:

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A = 3.14 * (12)^2\\A = 3.14*144\\A =452.16\ cm^2

Hence,

The area of flying disk is 452.16 square centimeters

Keywords: Circle, area

Learn more about circle at:

  • brainly.com/question/12939121
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Step-by-step explanation:

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