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julio38
03.05.2020 •
Mathematics
A regular nonagon (9 sides) has an area of 1582.56 square units. If the length of the apothem is about 21.98 units, how long would each side of the nonagon be?
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Ответ:
The length of each side of tyhe nonagon is 16 units
Step-by-step explanation:
step 1
Find the perimeter of nonagon
we know that
The area of any regular polygon is given by the formula
where
P is the perimeter
a is the apothem
we have
substitute
solve for P
step 2
Find the length side of nonagon
we know that
The perimeter of nonagon is given by the formula
where
b is the length side of nonagon
we have
substitute
solve for b
Ответ:
16 units
Step-by-step explanation:
The area is given by ...
A = (1/2)Pa
Then the perimeter (P) is ...
1582.56 = (1/2)(21.98)P
P = 1582.56/10.99 = 144
The perimeter is 9 times the side length, so each side is ...
144 units/9 = 16 units . . . . length of one side
Ответ: