Convert 850 ft to km.

A car is traveling at a velocity of $58\frac{m}{s}$. What is this velocity in $miles$ per $hour$ ($mph$)?

A car is traveling at $55$ miles per hour. What is this speed approximately in $\mathrm{km}/h$?

If a distance is $\mathrm{10,000}m$, approximately how many miles is this distance?

The speed of light is approximately 3.00×10⁸ m/s. Convert this speed to yards/week (yd/wk).

How many gallons are in 1 cubic meter (m³)?

Convert $2.5m^3$ to $\(\operatorname{cm}\)^3$

Convert the following to basic SI units or a combination of basic SI units:

2.2 x 10⁴ mi²