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MissTica
1 year ago
6

Finding the area of a regular polygon​

Mathematics
1 answer:
ddd [48]1 year ago
5 0
<h2><u>Solu</u><u>tion</u><u>:</u></h2>

360° ÷ 10 ÷ 2 = 18°

So the length of the decagon side is:

10 × tan18° × 2 = 20 × tan18°

The area is: ½ × 20 × tan18° × 10 × 10 = 1000 × tan18°

≈ 324.9

.: <u>3</u><u>2</u><u>4</u><u>.</u><u>9</u> is the final answer.

<em>I</em><em> </em><em>h</em><em>ope</em><em> </em><em>this</em><em> helps</em><em>. </em>

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Therefore, our required integral would be e(2x^{2} -12x)-4x^{2}+C.

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Step-by-step explanation:

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