A coconut tree swings with the wind in such a manner that the angle covered by its trunk is 18 degrees. If the topmost portion of the tree covers a distance of 44 metres, find the length of the tree.

140 metres

Formula to be used here,

Perimeter = 2\(\Pi \)R ×  \(\frac{angle}{360}\)

Let the length of tree be L meters

According to the question,

⇒ 2\(\Pi \)L ×  \(\frac{18}{360}\) = 44

⇒ \(\frac{44}{7}\) × \(\frac{18}{360}\) = 44

⇒ L = 140m.