A submarine travels 1.8 km due East from its base and then turns and travels due North for 0.1 km. How far away is the submarine from its base?
Give your answer rounded to 1 DP.

The answer to your question is the last one

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post

How am i goonna know explain