To get home from school, Bob walks four blocks north and three blocks east. What is the straight line distance between Bob’s house and his school?
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he walks towards north = 4 blocks
towards east = 3 blocks
straight distance can be calculated by applying Pythagoras theorem
square of straight distance= sum of square of both blocks
straight distance= underoot of sum of 16 and 9
staright distance= underoot of 25
so , distance required is 5 blocks
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