Find the Distance Between Two Points (3,6) and (1,8)

$(3, 6)$ and $(1, 8)$

Step 1

Use the distance formula to determine the distance between the two points.

$Distance = \sqrt{{(x_{2} - x_{1})}^{2} + {(y_{2} - y_{1})}^{2}}$

Step 2

Substitute the actual values of the points into the distance formula.

$\sqrt{{(1 - 3)}^{2} + {(8 - 6)}^{2}}$

Step 3

Simplify.

Subtract $3$ from $1$ .

$\sqrt{{(- 2)}^{2} + {(8 - 6)}^{2}}$

Raise $- 2$ to the power of $2$ .

$\sqrt{4 + {(8 - 6)}^{2}}$

Subtract $6$ from $8$ .

$\sqrt{4 + 2^{2}}$

Raise $2$ to the power of $2$ .

$\sqrt{4 + 4}$

Add $4$ and $4$ .

$\sqrt{8}$

Rewrite $8$ as $2^{2} \cdot 2$ .

Factor $4$ out of $8$ .

$\sqrt{4 (2)}$

Rewrite $4$ as $2^{2}$ .

$\sqrt{2^{2} \cdot 2}$

Pull terms out from under the radical.

$2 \sqrt{2}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$2 \sqrt{2}$

Decimal Form:

$2.82842712 \dots$

Step 5