Final answer:
Drake swam 0.7 km in his triathlon, which is equal to 700 meters.
Step-by-step explanation:
To convert kilometers to meters, we need to multiply the number of kilometers by 1000. Since Drake swam 0.7 km, we can convert this to meters by multiplying 0.7 by 1000.
0.7 km * 1000 = 700 meters
Therefore, Drake swam 700 meters in his triathlon.