What is the distance between $(2,5)$ and $(3, 9)$ ?

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Answer 1 · 2016-08-05T09:22:14

As an exact value $sqrt(17)$

As an approximate value $4.12$ to 2 decimal places

Think of this as a triangle where the line from (2,5) to (3,9) is the hypotenuse.

Tony B Tony B

Let the length od the line be $L$

Using Pythagoras

$=>L^2=1^2+4^2$

$=>L=sqrt(17)" "$ note that 17 is a prime number

What is the distance between (2,5) (2,5) and (3, 9)(3, 9)?