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OJASWI KOTHARI

· started a discussion

· 1 Months ago

?? (Question: 326289.0 )

GIVE THE SOLUTION?

Question:

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

Options:
A)

1632 m2

B)

1817 m2

C)

1532 m2

D)

1584 m2

Solution:

Ans: (d)


Knowledge Expert

· commented

· 1 Months ago

Dear Student,

We fixed it.

Best wishes
Team Toprankers

Kamaal Akhtar

· commented

· 1 Months ago

Area covered in one revolution (2 pi r h) is equal to the curved surface area of the roller. So area covered in 500 revolutions will be the area of the playground.
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