Slant height is √(7² + 24²) = 25 cm. One cap needs sheet area πrl = (22/7) × 7 × 25 = 550 cm². For 10 caps, the required sheet area is 10 × 550 = 5500 cm².
Class 9 Ganita Manjari Part 2 book Solutions
Chapter 14 Math of Space Surface Area and Volume (Ganita Manjari 2) Solutions
For each conical cap, base radius r = 7 cm and height h = 24 cm. The slant height is l = √(r² + h²) = √(7² + 24²) = √625 = 25 cm. Since caps are open at the base, sheet area per cap equals CSA = πrl = (22/7) × 7 × 25 = 550 cm². Therefore, 10 caps require 10 × 550 = 5500 cm² of sheet.
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