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kelseydavid69
18.10.2019 •
Mathematics
What is the measure in radians for the central angle of a circle whose radius is 5 and intercepted arc length is 7.2? round your answer to the earnest hundredth. (there are no answer choices. i have to type this answer out
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Ответ:
Step-by-step explanation:
step 1
Find the circumference
The circumference of a circle is equal to
we have
assume
substitute
step 2
Find the measure in radians for the central angle of a circle whose radius is 5 and intercepted arc length is 7.2 units
Remember that
The circumference of
subtends a central angle of ![2\pi \ radians](/tpl/images/0331/1756/ba141.png)
so
using proportion
Let
x-----> the central angle in radians
Ответ:
The sum of all angles in a pentagon is 540 degrees. Now that we know that, we can begin our equation:
100+102+108+121+x=540
Now, let's combine like terms: 431+x=540
Now, let's subtract 431 on both sides to figure out what x equals: x=109
x=109
If you have any further questions, please let me know in the comments of this answer! Thanks :)