400 is a significant number because it is a square number as 20*20 = 400
That depends to what number of figures you are rounding to. Rounded to one significant figure, 361 is approximately equal to 400. Rounded to two significant figures, this is equal to 360.
400
1 of them.
400 is a number
400
400
400
That depends to what number of figures you are rounding to. Rounded to one significant figure, 361 is approximately equal to 400. Rounded to two significant figures, this is equal to 360.
400.
400
400
1 of them.
400 is a number
what is a whole number for 400
1760
70,000
400