Mathematics, 13.07.2019 01:30 crystal271
Find the area of a regular pentagon with side equal to 3 and apothem equal to k
Answers: 1
![\bf \textit{area of a polygon}\\\\ A=\cfrac{1}{2}ap~~ \begin{cases} a=apothem\\ p=perimeter\\[-0.5em] \hrulefill\\ a=K\\ p=\stackrel{3+3+3+3+3}{15} \end{cases}\implies A=\cfrac{1}{2}K15\implies A=\cfrac{15}{2}K](/tpl/images/0083/0181/ce50e.png)
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