a drum of diameter 13m and 35m is half-filled with water.find the volume of water inside the drum
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diameter =13m,r=d÷2,13÷2=6.5 m ,height =35m volume of water =πr^2h, 22÷7×6.5×6.5×35=4647.5 m^3 ,volume of water=half volume of drum, =4647.5÷2=2323.75m^3
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