Length of Arc = θ360\;\frac{\theta}{360}360θ x 2π\piπr
Length of arc = 33cm, diameter = 28cm → r = 14cm
33 = θ360×2× 227×14\;\frac{\theta}{360} \times 2 \times \;\frac{22}{7} \times 14360θ×2×722×14
θ\thetaθ = 33×18022×2\;\frac{33 \times 180}{22 \times 2}22×233×180
θ\thetaθ = 135º