A scientist is working with 0.7 meters of gold wire. How long is the wire in millimeters?

0.7 meters * (1,000 millimeters / meter)

1 metre = 100 cm, and

1 cm = 10 mm

so ....

To convert meters to millimeters, you need to remember that there are 1,000 millimeters in 1 meter. So, to convert 0.7 meters to millimeters, you would multiply it by 1,000.

Here's the step-by-step calculation:

1 meter = 1,000 millimeters

0.7 meters * 1,000 = 700 millimeters

Therefore, 0.7 meters of gold wire is equivalent to 700 millimeters of wire.