The diameter of a garden roller is 1.4 m and it 2 m long. Find the max

1.	The diameter of a garden roller is 1.4 m and it 2 m long. Find the maximum area covered by it 50 revolutions?
Answer» Diameter of the roller = 1.4 m Radius (r) = 1.4/2 = 0.7 m and length (h) = 2m Curved surface area = 2πrh = 2 x 22/7 x 0.7 x 2 cm² = 8.8 m² Area covered in 50 complete revolutions = 8.8 x 50 m² = 440 m² revolutions = 8.8 x 50 m² = 440 m² Area of the playground = 440 m²

The diameter of a garden roller is 1.4 m and it 2 m long. Find the maximum area covered by it 50 revolutions?

Answer»

Diameter of the roller = 1.4 m

Radius (r) = 1.4/2 = 0.7 m

and length (h) = 2m

Curved surface area = 2πrh = 2 x 22/7 x 0.7 x 2 cm² = 8.8 m²

Area covered in 50 complete revolutions = 8.8 x 50 m² = 440 m² revolutions = 8.8 x 50 m² = 440 m²

Area of the playground = 440 m²