Question

pls solve this.
..pls don't spam​

Answer 1

Answer:

pls refer the above attachment

Answer 2

Answer:

diameter of a roller is 84 cm so, radius is 42 cm

length of a roller is 120 CM

the roller takes 150 complete revolutions to move once over a playground to level it .

area of circle : 2πr2

2×22/7× 42×42

11088 CM2

150 complete round : 11088 × 150

1663200 cm2