A dog is tied to a pole with a rope of length $49 m$ . If it rotates about the pole in a circular path as away as possible from the pole, then what is the distance covered by the dog after one revolution about the pole?

308 m

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154 m

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208 m

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616 m

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Solution

The correct option is A 308 m
The distance covered by the dog after one revolution about the pole is nothing but the circumference of the circle.
Circumference of the circle = $2 π$ r
Here, r is the length of the rope = 49 m

Circumference = $2 \times \frac{22}{7} \times 49$
$= 308 m$
$∴$ The distance covered by the dog after one revolution about the pole is 308 m.

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A dog is tied to a pole with a rope of length 49 m. If it rotates about the pole in a circular path as away as possible from the pole, then what is the distance covered by the dog after one revolution about the pole?

A dog is tied to a pole with a rope of length $49 m$ . If it rotates about the pole in a circular path as away as possible from the pole, then what is the distance covered by the dog after one revolution about the pole?