The diameter of a roller is 84 cm and its length is 120 cm. It takes 500 complete revolutions to move once over to level a playground. Find the area of the playground in m²?

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Solution

It can be observed that a roller is cylindrical.

Height (h) of cylindrical roller = Length of roller = 120 cm

Radius (r) of the circular end of roller =

CSA of roller = 2πrh

Area of field = 500 × CSA of roller

= (500 × 31680) cm²

= 15840000 cm²

= 1584 m²

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Q. The diameter of a roller is

84 c m

and its length is

120 c m

. It takes

500

complete revolution to move once over to level a playground. Find the area of the playground in

m^{2}

? [Assume

π = \frac{22}{7}

]

Q. Question 4
The diameter of a roller is 84 cm and its length is 120 cm. It takes 500 complete revolutions to move once over to a level playground. Find the area of the playground in

m^{2}

[A s s u m e π = \frac{22}{7}]

The diameter of a roller is 84 cm and its length is 120 cm. It takes 500 complete revolutions to move once over to level a playground. Find the area of the playground in $m^{2}$ ? $[A s s u m e π = \frac{22}{7}]$

Q. The diameter of a roller is

84 c m

and its length is

120 c m

. It takes

500

complete revolutions to move once over to level a playground. Find the area of the playground in

m^{2}

Q. The diameter of a roller is 84 cm and its length is 120cm. It takes 500 complete revolution to move once over to level playground. Find the area of the playground in

m^{2}

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The diameter of a roller is 84 cm and its length is 120 cm. It takes 500 complete revolutions to move once over to level a playground. Find the area of the playground in m2?

It can be observed that a roller is cylindrical. Height (h) of cylindrical roller = Length of roller = 120 cm Radius (r) of the circular end of roller = CSA of roller = 2πrh Area of field = 500 × CSA of roller = (500 × 31680) cm2 = 15840000 cm2 = 1584 m2

The diameter of a roller is 84 cm and its length is 120 cm. It takes 500 complete revolutions to move once over to level a playground. Find the area of the playground in m²?

It can be observed that a roller is cylindrical.

Height (h) of cylindrical roller = Length of roller = 120 cm

Radius (r) of the circular end of roller =

CSA of roller = 2πrh

Area of field = 500 × CSA of roller

= (500 × 31680) cm²

= 15840000 cm²

= 1584 m²