Question

Please help with word problem (in the attachment below)

Answer 1

18yds

Explanation:

From Robb to William

Use Pythagoras theorem to find the long side

a² =b² + C²

a² = 12² +5²

a² 144 +25

a² = 169

a =13

From Williams to Robb is 5km

Total distance is 13 +5 = 18yds