A decagon has 10 sides.
The sum of the interior angles is found using the formula S = (n-2)*180, where n is the number of sides.
The total sum of the interior angles of a decagon would be:
(10-2) *180 = 8 * 180 = 1440 degrees.
Now to find the measure of each interior angle, divide the total sum by the number of sides:
1440 / 10 = 144
Each angle is 144 degrees.
Answer:
3
Step-by-step explanation:
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22 inch is the diameter because d =2r
I think.
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