Slant height is √(8² + 6²) = 10 m. Curved surface area is 3.14 × 6 × 10 = 188.4 m². Dividing by width 3 m gives 62.8 m. Adding 0.2 m wastage gives total length 63 m. Class 9 Ganita ...
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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 ...
Using CSA = πrl = 308, (22/7) × r × 14 = 308 gives base radius r = 7 cm. Total surface area is πrl + πr² = 308 + (22/7) × 7² = 308 + 154 = 462 cm². Ganita ...
Using the cone volume formula V = (1/3)πr²h, we have 1570 = (1/3) × 3.14 × r² × 15. Simplifying gives 5 × 3.14 × r² = 1570, resulting in r² = 100, so r = 10 cm. Ganita Manjari part ...
The slant height is √(16² + 12²) = 20 cm. The curved surface area is πrl = 3.14 × 12 × 20 = 753.6 cm² and total surface area is 753.6 + π(12)² = 1205.76 cm². Ganita Manjari part 2 Chapter ...