mariyam3710
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A roller 150cm long has a diameter of 70cm to level a playground it takes 750 complete revolution. Find the area of the playground
The answer is 2475m^2
Explanation pls

Respuesta :

Answer:

roller 150cm long has a diameter of 70cm to level a playground it takes 750 complete revolution. Find the area of the playground. The answer is 2475m^2.

Step-by-step explanation:

devishri1977

Answer:

Step-by-step explanation:

Area of the playground = Curved surface area of the roller  * no. of revolutions

CSA = 2πrh

= 2* (22/7)* 70/2*150

=  2*22*70*150/7*2

=22*10*150

= 33000 cm^2 = 3.3 m^2

Area of play ground = 3.3 * 750 = 2475 m^2

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