77 sq-cm tripal is required to make a right circular conical tent. If the slant height of the tent is 7m, then calculate the base area of the tent.

Explanation

The slant height of the tent is 7 metres.
Let the radius of the base of the tent be r metres.
`therefore` the curved surface area of the tent `=(22)/(7)xx r xx 7 sq-m =22r sq-cm`.
As per question , `22r =77rArr r=(77)/(22)=(7)/(2)`.
`therefore` The area of the base of the tent `=(22)/(7)xx((7)/(2))^2sq-m=(22)/(7)xx(7)/(2)xx(7)/(2)sq-m`
`=(77)/(2)sq-m=38.5 sq-cm`.
`therefore` the required base area of the tent `=38.5sq-m`.