height of the cone is 3m and the diameter of its base is 8m find its curved surface area
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ANSWER
Diameter of the tent =8 m
r=2d=28=4 m
Height =3 m
Slant height (l)=h2+r2
=32+42
=25=5 m
Therefore, curved surface area of tent =πrl
=722×4×5=7440m2
Volume of the cone =31πr2h
=31×722×4×4×3
=7352m3
(i) Cost of canvas required for the tent
= C.S.A. × Unit cost
=7440×70
= Rs. 4400
(ii) Number of persons can be seated in the tent
=air required for eachVolume of conical tent
=
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