# 1/4 circle = 90° degrees *Waist Circumference ×2 ÷ π (3.14) = Radius for Waist… # 1/3 circle = 120° degrees *Waist Circumference ×3 ÷ 2×π (6.28) = Radius for Waist… # 1/2 circle = 180° degrees *Waist Circumference ÷ π (3.14) = Radius for Waist… # 2/3 circle = 240° degrees *Waist Circumference ×3 ÷ 4×π (12.56) = Radius for Waist… # 3/4 circle = 270° degrees *Waist Circumference ×2 ÷ 3×π (9.42) = Radius for Waist… # Full circle = 360° degrees *Waist Circumference ÷ 2×π (6.28) = Radius for Waist…