Drift velocity- i thought this was easy!?

Question

The density of conduction electrons in copper is n = 8.45 ×1028 m−3. (That is, n is the number of conduction electrons per unit volume in copper.) Suppose a copper wire with cross-sectional area S = 0.22 cm2 carries current I = 2.90 A. (Note that A denotes ampere). Determine the mean velocity of the conduction electrons.

isn't the formula just V=I/nqA? i get 9.73E-8 m/s as an answer..but apparently thats wrong...

can you help?

Answer 1

assuming correct equation

V= 2.90/(8.45E28*1.6E-19*.22)

this gives an answer of 9.74E-10m/s

Answer 2

1 meter = 100 centimeters, therefore

1 square meter = 100x100 square centimeters = 10,000 sq. cm.