the diameter of a roller is 84 cm and length is 120 cm. it takes 500 complete revolutions to move once over to level a playground. find the area of the playground in m^2
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Step-by-step explanation:
daimeter =84 cm radius =d÷2, 84÷2 =42cm height =120cm. CSA of roller =2πrh 2×22÷7× 42×120. 31680cm^2. area covers in 500 revolution =500×31680cm^2. =15840000 cm^2. area in m^2= 15840000÷100×100 =1584
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