Question

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? (Assume π = 22/7)​

Answer 1

Answer:

Radius of the roller (r)= 84/2cm=42cm

length of the roller (h)=120cm

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

=2×227×42×120=31680cm2

∴ Area of the playground

=31680×500=15840000cm2

15840000/100×100m2=1584m2

Hope this is helpful for you.

Answer 2

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