a roller takes 750 complete revolutions to move once over a level of road. find the area of road if the diameter of the roller is 84cm and lenght is 1m
Answers
Answered by
5
d=84cm
=>r= 84/2= 42 cm.
therefore,
l=1m=100cm
area=42*100 sq cm= 4200 sq. cm.
area of the road =4200*750=3375000 sq. cm.
hope the ans is correct
=>r= 84/2= 42 cm.
therefore,
l=1m=100cm
area=42*100 sq cm= 4200 sq. cm.
area of the road =4200*750=3375000 sq. cm.
hope the ans is correct
Answered by
3
ANSWER
Area of road =750× area covered in 1 revoluation
=750× lateral surface area of cylinder
=750×2πrh
Given, d=84cm⇒r=42cm→10042m
h=1m
=750×2×722×10042×1
=1001500×132
=1980m2
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