Question

The curved surface area of a cone of radii 2r and slant height 1/2, is​

Answer 1

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The curved surface area of a cone of radii 2r and slant height 1/2, is

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Radius (r) = 2r

Slant height (l) = ½

Curved Surface Area of cone = πrl

Curved Surface Area = 22/7×2r×½

Curved Surface Area = 22r/7

Answer 2

Qᴜᴇꜱᴛɪᴏɴ :

❥ The curved surface area of a cone of radii 2r and slant height 1 / 2 , is

ᴀɴꜱᴡᴇʀ :

⤍ The total surface area of a cone is π R2² + π LR , if R is the radius and L is the slant height.

⤍ Now , R = 2r and L = 1 / 2

⤍ So, the answer will be

π ( 2r ) 2+ π r l = π r ( l + 4r )

⤍ Hence, the answer is πr ( l + 4r )

Hope it helps uhh !! ♥