Question

Hey I need help relatively quickly. I can not figure out what David’s error is. Thank you so much for helping me!

Answer 1

21 miles

Explanation:

we should also use pythagoras theorem to find out how far they are from each other.

`{c}^(2) = {a}^(2) + {b}^(2) \: \: \: \: \: \: \\ = {20}^(2) + {5}^(2) \\ {c}^(2) = 425 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ c = √(425) \: \: \: \: \: \: \: \: \\ = 20.61 \: \: \: \: \:`