As oscar swam an 80 m river the current carried him 30 m downstream how far did he swim

Draw a diagram. You can see that

x^2 = 80^2 + 30^2

assuming he tried to swim straight across.

Although the question is worded poorly. He swam 80m, regardless of how far the river took him.

To find out how far Oscar swam, we need to consider two distances: the distance he swam in the river and the distance carried downstream by the current.

Let's break down the problem:

Distance swam in the river = 80 m
Distance carried downstream by the current = 30 m

To find the total distance Oscar swam, we need to combine these two distances. Since the current carried him downstream, we can add the two distances together:

Total distance swam by Oscar = Distance swam in the river + Distance carried downstream by the current
= 80 m + 30 m
= 110 m

Therefore, Oscar swam a total distance of 110 meters.