Question

The diameter of a roller is 77 cm and its length is 105 cm. It takes 600 revolutions moving nce Over, to level a playground. Find the area of the playground in m?​

Answer 1

Step-by-step explanation:

Radius of the roller (r)=

2

84

cm=42cm

length of the roller (h)=120cm

∴ Area of the playground levelled in taking 1 complete revolution 2πrh

=2×227×42×120=31680cm

2

∴ Area of the playground

=31680×500=15840000cm

2

100×100

15840000

m

2

=1584m

2

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Answer 2

Step-by-step explanation:

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