Answers

2016-04-07T15:17:16+05:30
Cost of painting 1m^2= Rs 30. cost of painting inner curved surface area= Rs 3300. I.C.Surf. area× 30= 3300 I.C.Surf.area= 3300/30 I.C.Surf.area= 110 m^2..(i) height = 10m C.Surf.area of cylinder 110m^2 = 2.pi.r.h 110m^2 = (2×22/7×r×10) 110m^2= 44/7×r×10 110×7/440= r 770/440 = r 7/4= r. 1.75m=r diameter = 2r diameter = 2(1.75)m diameter = 1.50m volume of well = pi.r^2.h volume= 22/7×(1.75×1.75)×10 volume= 22/7×3.0×10 volume= 66/7 volume= 9 m^3 answer...
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But 2 Vale main answer 3.5 aa raha hai diameter
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