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aliya0001 [1]
4 years ago
11

A roller 150cm long has a diameter of 70cm to level a playground it takes 750 complete revolution. Find the area of the playgrou

nd
The answer is 2475m^2
Explanation pls
Mathematics
2 answers:
Artyom0805 [142]4 years ago
8 0

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

Serga [27]4 years ago
3 0

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:

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