How many metres of cloth 5m wide will be required to make a conical tent, the radius of whose base is 7m and whose height is 24m? `(T a k epi=(22)/7)`

Explanation

given radius r`=7m`
height h`=24cm`
so slant height l`=(7^2+24^2)^(1/2)=25cm`
so curved surface area`=pirl`
`=550cm^2`
area of cloth`= `length`xx`breadth``
`550=`length`xx5`
so length`=110cm`