Safety Measures Earthquakes can make huge structures and buildings collapse, and cause cracks in the earth. The destruction caused by an earthquake depends upon its magnitude and duration. The damage is more when buildings are poorly constructed and when a city or town is close to the epicentre. The shaking...
road roller takes 50 complete revolutions to move once over to level a road. Find the area of the road if the diameter of the road roller is 0.7 m and length is 1.4 m.