Question

Diameter of the base of a cone is 10.5 cm and its slant height is 10 cm. Find its curved total area.​

Answer 1

Step-by-step explanation:

radius =10.5/2

curved surface area of a cone =radius x slant height x π

= 10.5/2 x 10 x 22/7

=165 cm²

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Answer 2

Step-by-step explanation:

Diameter of the cone = 10.5 cm

Radius of the cone, r = 5.25 cm

Slant height of the cone, l = 10 cm

Curved Surface Area = πrl sq.units

= 22/7 × 5.25 × 10

= 1155/7

= 165 cm²