A road roller takes 1500 complete revolutions to move once over to level a road. If the radius of the roller is 21 cm and length is 50 cm, then the area of the road is equal to
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12
first we find to area of surface of roller
= 2πrh
= 2×22/7×21×50
= 6600cm²
now we find area of road = 1500× 6600
= 9900000cm²
= 990m²
= 2πrh
= 2×22/7×21×50
= 6600cm²
now we find area of road = 1500× 6600
= 9900000cm²
= 990m²
Answered by
4
The area of road is
Step-by-step explanation:
Radius of roller = 21 cm
Length of roller = 50 cm
Curved surface area of cylinder =
So Area covered in 1 revolution =
Area covered in 1500 revolution =
Area covered in 1500 revolution =
Hence The area of road is
#Learn more :
The road roller takes 750 complete revolution to move once over to level a road find the area of the road if the diameter of road roller is84 cm and length is 1m
https://brainly.in/question/2419705
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