a conical tent is 9mhigh and the radius of its base is 12m. what is the cost of canvas required to make it,if a square metre of canvas costs Ruppees 10?Find also the volume of the tent.
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given that, hight of cone = 9m
base radius of cone = 12m
slant height (l) =√sq.r+sq.h
=√9*9+12*12
=√81+144
=√225
=15m
So, CSA of conical tent= πrl
= 22/7*12*15
=22/7*180
= 3.14*180
= 565.2 sq.m
According to the question,
cost of canvas per 1sq.m=10 Rulees
cost of canvas for 565.2sq.m = 565.2*10
=5625 Rupees
Volume of conical tent =1/3πr2h
=1/3*22/7*12*12*9
=22/7*4*108
=3.14*432
=1356.48 sq.m(app.)
base radius of cone = 12m
slant height (l) =√sq.r+sq.h
=√9*9+12*12
=√81+144
=√225
=15m
So, CSA of conical tent= πrl
= 22/7*12*15
=22/7*180
= 3.14*180
= 565.2 sq.m
According to the question,
cost of canvas per 1sq.m=10 Rulees
cost of canvas for 565.2sq.m = 565.2*10
=5625 Rupees
Volume of conical tent =1/3πr2h
=1/3*22/7*12*12*9
=22/7*4*108
=3.14*432
=1356.48 sq.m(app.)
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