Final answer:
The bug was traveling at a speed of 3.57 cm/s.
Step-by-step explanation:
To find the speed of the bug, we need to calculate the circumference of the circular planter using the equation C = 2πr, where r is the radius of the planter. In this case, the radius is 21 cm, so the circumference is 2π(21) = 42π cm.
Next, we divide the circumference by the time it takes for the bug to complete one lap to find the speed. In this case, the time is 11.76 s, so the speed is 42π cm / 11.76 s = 3.57 cm/s.