Answer :

Given: radius of base of cone (r) = 6 m

Slant height of cone (l) = 8 m

Since, this is a closed cone made of tin sheet. We need to find total surface area of the cone, it given by

TSA = πrl + πr^{2}

⇒ TSA = πr (l + r)

Substituting values in the formula, we get

⇒

According to the question,

Cost of 1 m^{2} = Rs. 10

Cost of 264 m^{2} = 10 × 264

= Rs. 2640

Thus, cost of making the required cone is Rs. 2640.

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