Answer:
The length of the path traveled after 3.0 seconds is 25.9 meters
Step-by-step explanation:
Given that,
A body moves in a straight line according to the equation,
........(1)
Here, x is in meters and t is in seconds
We need to find the length of the path traveled after 3.0 seconds. To find it, simply put the value of t as 3 seconds in equation (1).

So, the length of the path traveled after 3.0 seconds is 25.9 meters. Hence, this is the required solution.