4 significant figures.
5.4mi x 5280ft/mi = 28512ft = 29000ft in significant figures
Answer: 3.0 km = 1.86411 mi.1.9 miles (rounding off for significant figures) 3.00000 km = 1.86411 miles )
Answer: 2.4 mi. = 3,862.425 m
No. You would multiply by 1.61 if you want to use 3 significant figures. 1 mi = 1.60934km.
1mi = 5280ft 1h = 3600s 3.4mi/h x 5280ft/mi x 1h/3600s = 5.0ft/s (rounded to two significant figures)
Kph is km/h and mph is mi/h. 1 mi = 1.61km.75 km/h x 1mi/1.61km = 47 mi/h or 47 mph (rounded to two significant figures due to 75 kph).
85 mi/h x 1 km/.621 mi x 60 min/1 h x 60 sec/1 min = 492,753 km/sec (490,000 km/sec if you address the concern of significant figures)
You can get them in your local flee market.
CONGRUENT
The Antarctic is constantly changing due to melting ice caps. The latest figures state the Antarctic is 413,129 Sq Mi (1.07 million km2).
Speed by definition = distance/time; in this instance 1307 mi/2.35 hr = 556 mi/hr, to the justified number of significant digits.
0.375 mi