Question

Find the circumference of a wheel whose radius is 49 cm. Find the distance covered in 120 seconds, if it revolves 5 times per second

Answer 1

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Answer 2

radius of wheel = 49 cm

circumference of wheel = 2πr

= 2 × (22/ 7) × 49 =14 × 22 = 308 cm

since , the wheel revoles 5 times in 1 second . so then,

distance covered in 1 second

= 5 × 308 = 1540 cm

distance covered in 120 seconds will

be = 120×distance covered in 1second

= 120 × 1540 = 184800 cm

Answer:
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distance covered = 184800cm = 1848 m

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