The diameter of a roller is 42 cm and its length is 100 cm . It takes 400 complete Revolutions moving once over to level a playground . Determine the area of the playground ... also , find the cost of levelling the playground at rs 50 per 100 sq. Meter
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Diameter=42
Radius = d/2
=42/2
=21cm
Length= height=100cm
Revolutions =400
LSA=2πrh
=2×22/7×21×100
=2×22×3×100
=44×300
Area=13200cm²
Cost =rs 50 per m²
=13200×50
=6,60,000
=660000/100×100
=660rs
Hope u r useful
Radius = d/2
=42/2
=21cm
Length= height=100cm
Revolutions =400
LSA=2πrh
=2×22/7×21×100
=2×22×3×100
=44×300
Area=13200cm²
Cost =rs 50 per m²
=13200×50
=6,60,000
=660000/100×100
=660rs
Hope u r useful
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