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)
You can get them in your local flee market.
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)
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).
The first calculation has 3 significant figures as all numbers included in the calculation are whole numbers. For the second calculation, since there are only 3 significant figures in 10400mi and 328102hr, the answer should have 3 significant figures as well.
0.375 mi
4224/5280 mi = 0.8 mi