Q. 34.2( 6 Votes )

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Answer :

Diameter of base = 14 m

⇒ radius of base = r = = 7 m

Let h be the height of cone

Slant height = l = 25 m

Total surface area of cone = curved surface area of cone + base area of cone

⇒ total surface area = πrl + πr^{2}

= πr(l + r)

= × 7 × (25 + 7)

= 22 × 32

= 704 m^{2}

Therefore, total surface area of the cone is 704 m^{2}

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