Simplify square root of 306
1 answer:
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The approximate area of the decagon with a side of 8cm comes to be 492.40 cm².
The side of the regular decagon = 8cm
<h3>What is a regular decagon?</h3>A regular decagon is a polygon with 10 sides that are equal to each other.
The area of a regular decagon with side a is:
So, the area A of the regular decagon with a side of 8cm:
A=492.40 cm²
Therefore, the approximate area of the decagon is 492.40 cm².
To get more about the decagon visit:
<h2>90 sq in</h2>
Step-by-step explanation:
The total area in the figure can be divided into two areas.
The is the area of the
rectangle.
The is the area of the adjacent triangle to the rectangle.
Total area=90