the diameter of a roller is 80cm and its length is 126cm.it takes 750completer revolutions moving once over to level a playground.find the area of playground
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Answered by
28
2 × 22/7 × 40 × 126 × 70
= 2,217,600 cm^2 or 221.76m^2
= 2,217,600 cm^2 or 221.76m^2
Answered by
100
radius=80/2=40cm
curved surface area=2πrh
=2*22/7*40*126=31680cm²
area of playground=31680*750=23760000cm²=2376m²
curved surface area=2πrh
=2*22/7*40*126=31680cm²
area of playground=31680*750=23760000cm²=2376m²
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