The diameter and slant height of a conical tent are 16 m and 5.6 m respectively. What length of cloth of width 4 m is needed to make the tent?

1. Radius r = 16/2 = 8 m; curved surface area = πrl = (22/7) × 8 × 5.6. 2. CSA = (22/7) × 44.8 = 140.8 m². 3. Length of cloth = area ÷ width = 140.8 / 4. 4. Length = 35.2 m. _Source: RRB Group D CEN-02/2018 PYQ, Q.70._