Answer :

**(i)** Slant height (l) of cone = 14 cm

Let the radius of the circular end of the cone be "r".

CSA of cone = πrl

308 cm^{2} = × r × 14

r =

= 7 cm

**Therefore, the radius of the circular end of the cone is 7 cm.**

**(ii)** The total surface area of cone = CSA of cone + Area of base

= πrl + πr^{2}

= [308 + × (7)^{2}] cm^{2}

= (308 + 154) cm^{2}

= 462 cm^{2}

**Therefore, the total surface area of the cone is 462 cm ^{2}**

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