For this case we have the following equation: s = root (S.A / 6) Substituting values we have: For S.A = 180: s = root (180/6) s = root (30) For S.A = 120: s = root (120/6) s = root (20) s = root (4 * 5) s = 2 * root (5) Subtracting both values we have: root (30) - 2 * root (5) Answer: root (30) - 2 * root (5) option 2
