Question

Diameter of the base of a

cone is 10.5 cm and its

slant height is 10 cm. Find

its curved surface area .​

Answer 1

Step-by-step explanation:

Diameter of the base = 10.5

Radius of the base (r) = 10.5/2 cm = 5.25cm

Slant height ( l ) = 10cm

CSA = πrl = 22/7 x 5.25 x 10

= 165cm square

Answer 2

Answer:

Radius of the base of cone = diameter/ 2 = (10.5/2)cm = 5.25cm

Slant height of cone, say l = 10 cm

CSA of cone is = πrl

= (22/7)×5.25×10 = 165

Therefore, the curved surface area of the cone is 165 cm2.

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