Question

Two joggers run 8 miles north and then 5 miles west what they is the shortest distance to the nearest tenths of a mile they must travel to return to their starting point

Answer 1

Explanation:

Use pythagoras: a^2+b^2=c^2

so rearrange to b^2=a^2-c^2

so 8^2-5^2

64-25=39

Square root

square root of 39 is 6.2 miles is the answer