2981.35
0.2267
20.8
What's "best" depends on what you are going to use this for. You can take a calculator and do the exact calculation. Or you can round the numbers in a way that makes it easy to do the calculations in your head.
29.5714
19
20.4211
What's "best" depends on what you are going to use this for. You can take a calculator and do the exact calculation. Or you can round the numbers in a way that makes it easy to do the calculations in your head.
20 inch
About 20 to 40
20 centimeters
Best estimate is 20 x 40 = 800 Actual answer is 22 x 39 = 858
The best estimate is, of course, the exact answer which is 19.075I would settle for 5*4 = 20.