# How fast is 70 km/h in mph?

#### Understand the Problem

The question is asking to convert a speed of 70 kilometers per hour (km/h) into miles per hour (mph). This involves using a conversion factor between kilometers and miles.

The speed is approximately $43.50 \text{ mph}$.

The speed converted to miles per hour (mph) is approximately $43.50 \text{ mph}$.

#### Steps to Solve

1. Identify the conversion factor

We need to use the conversion factor between kilometers and miles. The factor is:

$$1 \text{ kilometer} \approx 0.621371 \text{ miles}$$

1. Multiply the speed in kilometers by the conversion factor

To convert the speed of 70 kilometers per hour (km/h) into miles per hour (mph), we multiply by the conversion factor.

$$\text{Speed in mph} = 70 \text{ km/h} \times 0.621371 \text{ miles/km}$$

1. Calculate the result

Now we perform the multiplication:

$$\text{Speed in mph} = 70 \times 0.621371$$

Calculating this gives:

$$\text{Speed in mph} \approx 43.496$$

Since we typically round to two decimal places for speed, we will round this value.

The speed converted to miles per hour (mph) is approximately $43.50 \text{ mph}$.