Question

the diameter of the garden roller is 1.4 mand it is 2 m long how much area will it cover in 5 revolution

Answer 1

curved surface area=1 revolution
diameter =1.4m=r=1.4/2
height=2
total surface area=πr^2h
=22/7*1.4/2*1.4/2*2
=0.8m^2
0.8*5=area covered by garden roller in 5 revolution
=4m^2=area
thnkkks:))

Answer 2

Total surface area of cylinder=2πrh

so first we will find area covered in one revolution

=2×22/7×1.4××2

=2×22/7×14/10×2

=17.6 m²

So the area covered in five revolution=17.6×5=88m²

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