A lawn roller is 1m and 80cm high. What area is covered in each revolution?
Answers
Step-by-step explanation:
Diameter , D = 80 cm = 0.8 m
Radius , r = 0.4 m
In one revolution distance covered = 2π r= 2×3.14×0.4 = 2.512 m
Width = 1 m
Area covered in one revolution = (2.512×1) = 2.512 m²
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Given : A lawn roller is 1m and 80cm high.
To find : area covered in each revolution
Solution:
A lawn roller is 1m long
& 80 cm high
Height of Roller = Diameter of roller
=> radius of Roller = 80/2 = 40 cm
Circumference of Circle = 2πR = 2 * 3.14 * 40
= 251.2 cm
= 2.512 m
area is covered in each revolution = Circumference of Circle * Length
= 2.512 * 1
= 2.512 m²
2.512 m² is the area covered in each revolution
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