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प्रश्न
The circumference of a garden roller is 280 cm. How many revolutions does it make in moving 490 meters?
उत्तर
/ircumference = 280 cm = 2.8m
Dstance travelled = 490 m
No.of. revolution = `490/2.8 = 175`
Roller takes 175 revolutions in moving 490 m
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