ZOOOT = 2 x 70∘^{\circ}∘ 140∘^{\circ}∘
Length = θ360\;\frac{\theta}{360}360θ x 2π\piπr
140∘360×2× 227\;\frac{140^{\circ}}{360} \times 2 \times \;\frac{22}{7}360140∘×2×722 x 18
= 44cm
