well here we would use the Pythagorean theorem: A^2 +B^2 =C^2
A and B are the legs, so Amanda's distance is A and Zaley's is B
5^2+6^2= C^2
now we find the square root of 5 and 6
5x5= 25 and 6x6= 36
25+36= 61
now we have 61^2 = C^2 and we find the square root,
the square root of 61 is 7.8 but we can round up to 8
so Karen's distance is 8 blocks
now we take Amanda, Zaley and Karen's blocks and add them.
5+6+8 = 19
so Zaley is traveling 19 blocks total
i hope this helped (ノ◕ヮ◕)ノ*:・゚✧