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

Explanation

Here, diameter, d=1.4m and height, h=2m

Curved surface Area of garden roller=`2xxpixxrxxh`

`2xx22/7xx1.4/2xx2` (`r=d/2`)

`8.8 m^2`

Now, area covered in 5 revolutions=`8.8xx5`=`44 m^2`

Hence, area will cover `44 m^2` in 5 revolutions.