Question

The diameter of a garden roller is 1.4 m and i 1s 2 m long. How much area will it cover in 50 revolutions?​

Answer 1

Step-by-step explanation:

The correct option is C

44

m

2

A roller is cylindrical shaped.

Height (h) of the cylindrical roller = length of roller = 2 m

Diameter of the roller = 1.4 m

⇒

Radius (r) of the roller = 0.7 m

We need to calculate the area covered in 5 revolutions of this roller.

Area covered

=

CSA of the roller

×

Number of revolutions

We know, CSA of a cylinder with radius 'r' and height 'h' is

$2 \times \frac{22}{7} \times 0.7 \times 2 \\ 8.8 {m}^{2}$

Answer 2

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