Question

.) The diameter of a garden roller is 1.4m and it is 2m long How much area will it cover in 5 revolutions​

Answer 1

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Step-by-step explanation:

9th

Maths

Surface Areas and Volumes

Surface Area of Right Circular Cylinders and Cones

The diameter of a garden ro...

MATHS

The diameter of a garden roller is 1.4 m and it is 2 m long. How much area will it cover in 5 revolutions ?

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ANSWER

Area covered = Curved surface × Number of revolutions

r=

2

1.4

=0.7 m

h=2 m

Curved surface = 2πrh=2×

7

22

×0.7×2=8.8 m

2

Hence,

Area covered = 8.8×5=44 m

2

Answer 2

Answer:

Area covered = Curved surface × Number of revolutions

r=

2

1.4

=0.7 m

h=2 m

Curved surface = 2πrh=2×

7

22

×0.7×2=8.8 m

2

Hence,

Area covered = 8.8×5=44 m

2

Step-by-step explanation:

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