Answer: \(35\ \text{mph} = 56.32704\ \text{km/h}\) (≈ \(56.33\ \text{km/h}\))
Explanation: Use the conversion \(1\ \text{mile} = 1.609344\ \text{km}\), so multiply mph by \(1.609344\):
\[
35\times1.609344 = 56.32704.
\]
Some other examples (mph → km/h):
- \(30\ \text{mph} = 30\times1.609344 = 48.28032\ \text{km/h}\) (≈ 48.28)
- \(50\ \text{mph} = 80.4672\ \text{km/h}\) (≈ 80.47)
- \(60\ \text{mph} = 96.56064\ \text{km/h}\) (≈ 96.56)
- \(70\ \text{mph} = 112.65408\ \text{km/h}\) (≈ 112.65)
- \(100\ \text{mph} = 160.9344\ \text{km/h}\) (≈ 160.93)
Tip: For quick mental estimates, multiply mph by 1.6.