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Radius of hemispherical bow! =, , , , , Volume of hemispherical bowl =, , , , , , 5 5\3, Ba 5), 7, , = 303.1875 em? = 0,303 / (approx.), , , , 2, , 6, A hemispherical tank is made up of, an iron sheet 1 cm thick. If the inner, radius is 1 m, then find the volume of, the iron used to make the tank., , Sol. Inner radius of hemispherical tank = 1m, = 100m, Thickness of hemispherical tank = 1 om, Outer radius of hemispherical tank, , Volume of iron used to make the tank, , , , x [1030301 ~ 1000000], , x = x 30301 em?, , , , = 63487.81 cm* = 0,06349 m° (approx.), Find the volume-ef-a sphere whose, surface area i§ 154 cm?,, , Let radius of sphere be rem, , Surface area of sphere = 4nr, , , , , , , , , , , , , , , , , , , was while-washed at the egg 4,, % 4989.60. Inthe cost Of white washing,, is € 20.00 per'square metre, find ty, (© inside surface area of the dom, (@) volume of the aifinside the, dome., @, Total cost of white-washing the, hemispherical dome = % 4989.6), ( f white-washing per m?, = 22000, surface area of hemispherical, , ne = 1989.60 _ 349 4808, , 20, I m be the radius of, hemispherieniaagie, Then inmeaietieta, , hemisphericabelamie = 2n7, , , , e area of, , , , , , , , 2m? = 249,48 Very She, , ees La, 2n, , = 8x7 :, , "ee y, , P= 3069 >r=63m Sot, , i AN, Volume of hemispherical dome, z, , 2 _ os