Question

Please help: (picture)

Answer 1

We need to solve the speed formula for d. To do so, let's start by moving the number of the left hand side:

`(S)/(356) = √(d)`

Square both sides to get rid of the square root:

`(S^2)/(126736) = d`

Now plug the known value of the speed to find the distance:

`d = (140^2)/(126736) = (19600)/(126736) \approx 0.15465`

So the closest answer is the last one: d=0.155km