Subject
Quantitative Aptitude
Topic
Mensuration
How many meters of cloth 5.2 metre wide will be required to make a conical tent, the radius of whose base is 10 m and height is 24 m?
How many meters of cloth 5.2 metre wide will be required to make a conical tent, the radius of whose base is 10 m and height is 24 m?
ক)
60π mখ)
50π mগ)
55π mঘ)
57π mঙ)
None of theseExplanation
Given, Radius of the base of the cone (R) = 10 m Height of the Cone (H) = 24 m ∵ Slant height ( l ) = ∴ Slant Height = We know, Curved Surface Area of the cone = πR l ∴ Curved Surface Area = π x 10 x 26 = 260π m 2 Area of the cloth used = Curved Surface Area of the cone = 260π m 2 Given, width of the cloth = 5.2 m Length of the cloth used = Area of Cloth used/Width of Cloth ∴ Length of the cloth = 260π/5.2 = 50πRelated questions
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