a road roller takes 750 revoulation to move once over to level a road.find the area of road if diameter of road roller is 84cm and length is 1 metre.
Answers
Answered by
16
Step-by-step explanation:
Area of road =750× area covered in 1 revoluation
=750× lateral surface area of cylinder
=750×2πrh
Given, d=84cm⇒r=42cm→
100
42
m
h=1m
=750×2×
7
22
×
100
42
×1
=
100
1500×132
=1980m
2
Similar questions