Arthur D. answered 01/18/17
Tutor
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(255)
Forty Year Educator: Classroom, Summer School, Substitute, Tutor
they go 2.6 km east altogether
they go 6.6 km north altogether
they go back west 4.1 km
and 0.4 km south
Dovey's house is northwest of Robin's house
the right triangle has the hypotenuse going down from left to right
the horizontal leg is 4.1-2.6=1.5 km
the vertical leg is 6.6-0.4=6.2 km
find the hypotenuse
1.52+6.22=P2
2.25+38.44=p2
40.69=p2
p=√40.69
p=6.37887 km is the distance the pigeons had to fly round as you like