The slant height of a cone is 15 cm and the radius of its base is 9 cm. A sector of radius 15 cm and central angle 120° from this circle is used to form the cone. What will be the total surface area of the cone?
Subject: Mathematics | Topic: Trigonometry | Difficulty: MEDIUM
Options
- (A) 216π cm²
- (B) 312π cm²
- (C) 261π cm²
- (D) 226π cm²
Verified Answer
Option (A): 216π cm²
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