Question

If the radius of the cone is 14 cm and the diameter is 7 cm then its curvature


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Answer 1

Answer:

Given that,

Height of cone = 14 cm ...(i)

Radius of base = 7 cm ...(ii)

We know that,

Surface area, A=πr(r+

h

2

+r

2

)

Substituting the value from (i) & (ii)

A=π(7)(7+(14)

2

+7

2

)

=7π(7+

245

)

=7π(7+15.65)

=7×3.14(7+15.65)

=498.35cm

2

∴

A=498.35cm

2