Using base radius r = 7 cm and slant height l = 10 cm, the curved surface area formula πrl gives (22/7) × 7 × 10 = 220 cm².
CBSE Class 9 Ganita Manjari part 2 Chapter 14 Solutions
Class 9 Ganita Manjari Part 2 Math of Space Surface Area and Volume Question Answer
The base radius of the right circular cone is given as r = 7 cm and its slant height is l = 10 cm. The curved surface area is given by the formula CSA = πrl. Substituting the given values using π ≈ 22/7, we calculate CSA = (22/7) × 7 × 10 = 220 cm².
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