The diameter of a rollerbis 84cm and its length is 120cm it takes 500 complete revolutions to roll once over the playground to level find the area of the playground
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d=84cm
r=42 cm,l=h=120cm
CSA of roller= 2pierh
2×22/7×42×120
=31680cm square
Are of field=500×CSA of roller
=500×31680
=15840000cm square
r=42 cm,l=h=120cm
CSA of roller= 2pierh
2×22/7×42×120
=31680cm square
Are of field=500×CSA of roller
=500×31680
=15840000cm square
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