Question

A bug completes one lap along the edge of a circular planter of radius 11.7 cm in 13.91 s. How fast was it traveling? 1. 10.8518 2. 7.53496 3. 12.0428 4. 6.06143 5. 13.9643 6. 8.63381 7. 7.9597 8. 5.28492 9. 13.1952 10. 7.74398 Answer in units of cm/s.

Answer 1

8.5.28492 cm/s

Explanation:

We are given that

Radius of circular planter=11.7 cm

Time taken by bug =13.91 s

We have to find the speed of bug.

We know that

Speed =
`(distance)/(time)`

Distance traveled by bug =
`2\pi r`

Distance traveled by bug =
`2* 3.14* 11.7`

Because
`\pi=3.14`

Speed of bug=
`(2* 3.14* 11.7)/(13.91)=5.28224 cm/s`

Hence, speed of bug=5.2822 4 cm/s

Answer:8.5.28492 cm/s