The slant height and base diameter of a conic | vedclass

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Question

(A) Given: Slant height $(l) = 25 \, m$ and base diameter $(d) = 14 \, m$.First,calculate the radius $(r)$ of the base:$r = \frac{d}{2} = \frac{14}{2}

Vedclass · Accepted Answer

$Rs. 1155$

Vedclass · Answer

(A) Given: Slant height $(l) = 25 \, m$ and base diameter $(d) = 14 \, m$.First,calculate the radius $(r)$ of the base:$r = \frac{d}{2} = \frac{14}{2} = 7 \, m$.Next,calculate the curved surface area $(CSA)$ of the conical tomb:$CSA = \pi r l = \frac{22}{7} 	imes 7 	imes 25 = 22 	imes 25 = 550 \, m^2$.The rate of white-washing is $Rs. 210$ per $100 \, m^2$.Therefore,the total cost of white-washing is:$	ext{Cost} = \left( \frac{210}{100} ight) 	imes 550 = 2.1 	imes 550 = Rs. 1155$.

The slant height and base diameter of a conical tomb are $25 \, m$ and $14 \, m$ respectively. Find the cost of white-washing its curved surface at the rate of $Rs. 210$ per $100 \, m^2$.

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