SOLUTION: A circular sector AOB, centre O and radius 8 cm, contains an angle of {{{3pi/4}}} radians at the centre. The straight edges OA and OB are joined to form a right circular cone. Find

Question 1117755: A circular sector AOB, centre O and radius 8 cm, contains an angle of radians at the centre. The straight edges OA and OB are joined to form a right circular cone. Find the exact value of the curved surface area of the cone.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

The area of the whole circle is:

and

The area of the sides of the right circular cone is 24pi

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