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धातुओं के खलनायक एवं कवथनांक होता है |
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Answer» Answer:Solution:(i) Cost of white-washing the dome from inside = Rs 4989.60Cost of white-washing 1m2 area = Rs 20CSA of the inner side of dome = 498.96/2 m^2 = 249.48 m^2(II) Let the inner RADIUS of the hemispherical dome be r.CSA of inner side of dome = 249.48 m^2 (from (i))Formula to find CSA of a HEMI sphere = 2πr^22πr2 = 249.482×(22/7)×r2 = 249.48r^2 = (249.48×7)/(2×22)r^2 = 39.69r = 6.3So, radius is 6.3 mVolume of air inside the dome = Volume of hemispherical domeUsing formula, volume of the hemisphere = 2/3 πr^3= (2/3)×(22/7)×6.3×6.3×6.3= 523.908= 523.9(approx.)Answer: Volume of air inside the dome is 523.9 m^3. |
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