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masha68 [24]
3 years ago
5

Find the length of each arc r=13 ft x=90 degrees

Mathematics
1 answer:
VladimirAG [237]3 years ago
6 0

Answer:

13\pi/2

Step-by-step explanation:

The formula of the circumference of a circle is 2\pi r.

The length of an arch can be found by using the ratio of circumference to the arc.

First, find the circumference of the circle:

2\pi *13=26\pi

Then you find the ratio:

The length of the arc is 90/360, which is 1/4, of the circumference.

Finally, find the length of the arc:

26\pi*1/4=(13/2)\pi or 13\pi/2

I hope this helps :)

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Answer:

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Step-by-step explanation:

certain positive number: x

x is multipled by 4:

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result of this is subtracted from the original number:

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the result is 21 less than 0, this means negative 21

x - 4x = 0 - 21 = -21

do algebra:

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AlekseyPX

Answer:

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Step-by-step explanation:

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