Answer
a. $5$ blocks
b.
Walking distance=$31$ blocks,
Straight-line distance=$25$ blocks.
c. The two points are on the same avenue or the same street.
Work Step by Step
a.
$d(A, B)=\sqrt{3^{2}+4^{2}}=\sqrt{25}=5$.
b
We want the distances from $C=(4,2)$ to $D=(11,26)$.
The walking distance is $|4-11|+|2-26|=7+24=31$ blocks.
Straight-line distance is $\sqrt{(4-11)^{2}+(2-26)^{2}}=\sqrt{7^{2}+24^{2}}=\sqrt{625}=25$ blocks.
c.
There is no right triangle formed,
the two points are on the same avenue or the same street.
