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949.85 m
Step-by-step explanation:
Cylinder height = 5.5m
Radius if Cylinder/Cone = 15m
Height of Cone = 8.25-5.5 = 2.75m
Area of Cylinder = 2πr*h =2*3.14*15*5.5=518.5m^2
Area of Cone=πrs+πr^2
s=slant height = sqr. root of (2.75^2+15^2)=sqr.root(232.5625)=15.25
So surface area of cone = 3.14*15.25*15+3.14*15*15= 718.275+706.5=1424.775
Area of canvas = l*b = 1424.775
l*1.5=1424.775
l=1424.775/1.5=949.85 mtr
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