Mars, on average, is 140 million miles from the Sun. 1 mi = 1609 m .

Part #1:
Express the distance between Mars and the Sun in meters using powers of 10.
Express your answer using two significant figures.

Answer: d =2.25×10^11 m

Part #2:
Express the distance between Mars and the Sun in meters with a meter prefix (km).
Express your answer to two significant figures and include the appropriate units.

Answer: d=_______