Question

diameter of the base of a cone is 10.5 cm and it's slant height is 10 cm .find its curved surface area.

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Answer 1

Answer:

Diameter of the base of the cone is 10.5 cm and slant height is 10 cm.

Curved surface area of a right circular cone of base radius, 'r' and slant height, 'l' is πrl.

Step-by-step explanation:

Diameter, d = 10.5cm

Radius, r = 10.5/2 cm = 5.25 cm

Slant height, l = 10 cm

Curved surface area = πrl

= 22/7 × 5.25 × 10

= 165 cm²

Thus, curved surface area of the cone = 165 cm²