Question 66

What is the distance between the points (4,7) and (-1,-5)?

Solution

Distance between two points $$(x_1 , y_1)$$ and $$(x_2 , y_2)$$ = $$\sqrt{(y_2 - y_1)^2 + (x_2 - x_1)^2}$$

Now, distance between points (-1,-5) and (4,7)

= $$\sqrt{(7+5)^2 + (4+1)^2} = \sqrt{(12)^2 + (5)^2}$$

= $$\sqrt{144 + 25} = \sqrt{169}$$

= $$13$$ units

=> Ans - (B)

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