<p class="rasanika.com" style="--r-orig-iet:'رسانیکا'" data-r-orig-lvo4q1g9k="https://rasanika.com"><iframe data-codebox loading="lazy" allowfullscreen scrolling="no" referrerpolicy="no-referrer" style="--r-orig-6ryb83xc:'رسانیکا';aspect-ratio:1.78" src="https://rasanika.com/codebox/l6" width="1600" height="900" class="rasanika.com" data-r-orig-nmrg="https://rasanika.com"></iframe><a class="non-prose hidden r-dd-vs8sz1u9rgw7x2auha" style="display:none" rel="nofollow" href="https://rasanika.com" title="رسانیکا">رسانیکا</a><b class="non-prose hidden r-dd-vs8sz1u9rgw7x2auha" style="display:none">منبع: https://rasanika.com</b></p>

محاسبه محیط مربع