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
The best estimate is, of course, the exact answer which is 19.075I would settle for 5*4 = 20.
Best estimate is 20 x 40 = 800 Actual answer is 22 x 39 = 858