Question

The diameter of a garden roller is 1.4 m and it is 2 m long. How much area will it is 2 m long. How much area will it cover in 5 revolutions. `(π = 22/7)`

Answer 1

Given:

Diameter of roller = 1.4 m

Length = 2 m

Number of revolutions = 5

`π = 22/7`

Step-wise calculation:

1. Circumference of roller = π × diameter

= `22/7 xx 1.4`

= 4.4 m

2. Area covered in 1 revolution = Circumference × Length

= 4.4 × 2

= 8.8 m²

3. Area covered in 5 revolutions = 5 × 8.8

= 44 m²

The roller will cover 44 m² in 5 revolutions.