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Question
A road roller takes 600 complete revolution to move once to level a road. Find the area of the road if the diameter of the road roller is 84 cm and length is 2cm
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Solution
Dear student
Diameter=84cm
Radius=Diameter/2=84/2 cm =42cm
Length or Height = 2cm
Curved surface area = 2x22/7xRxH
= 2 x 22/7 x 42 x 2
= 528cm sq.
Total revolutions = 600
Total area = 528 x 600
= 316800 cm sq.
Regards
Diameter=84cm
Radius=Diameter/2=84/2 cm =42cm
Length or Height = 2cm
Curved surface area = 2x22/7xRxH
= 2 x 22/7 x 42 x 2
= 528cm sq.
Total revolutions = 600
Total area = 528 x 600
= 316800 cm sq.
Regards
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