# What is the distance d between points a and b, where point a (3, 4) and b (1, 2)

We will use the distance formula in order to find the distance between points a and b.

## Answer: The distance d between points a and b is 2 **√** 2 units.

Let us see how we will use the concept of the distance formula in order to find the distance between points a and b.

**Explanation:**

The distance between any two points A(a, b) and B(c, d) is given by,

d = **√** [(a - c)^{2} + (b - d)^{2}]

By substituting the points a(3, 4) and b(1, 2) in the above formula we get our required distance d.

⇒ **√** [(3 - 1)^{2} + (4 - 2)^{2}]

⇒ **√** [2^{2} + 2^{2}]

⇒ **√** 8 = 2**√** 2 units