A road roller takes 1500 complete revolutions to move once over to level a road. Find the area of the road if the diameter of a road roller is 168 cm and length is 2 m.
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Step-by-step explanation:
Given :
Diameter of road roller, D = 168 cm
length of ,, ,, , H = 2 m
Number of rotations = 1500
Find the radius of road roller ,R => D/2 = 168/2 = 84 cm
convert the length of road roller in cm = 2×100 = 200 cm
Find the LSA of the road,
LSA = 2πrh
LSA = 2 × 22/7 × 84 × 200
= 105600 cm²
Area of road = LSA of road × number of rotations
Area of road = 105600 × 1500
= 158,400,000 cm²
= 158,400,000/100×100 m²
= 15,840 m²
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