4.8 x 10-3 or, to a literalist, 0.48 X 10-2.
It is rounding a decimal representation of a number so that there are two digits after the decimal point.
move the decimal two places to the right.
The number 63.4721 is expressed to four decimal places (DP), which means it is already in the desired format. If you were to round it to fewer decimal places, it could be expressed as 63.47 (to two decimal places) or 63.5 (to one decimal place). However, as it stands, 63.4721 is precise to four decimal places.
31.1475
Expressed as a decimal, rounded to two decimal places, sqrt(935) = ±30.58
Expressed as a decimal, rounded to two decimal places, sqrt(162500) = ±403.11.
Expressed as a decimal, rounded to two decimal places, sqrt(2002) = ±44.74
Expressed as a decimal, rounded to two decimal places, sqrt(705) = ±26.55.
To make a percentage a decimal, move the decimal point two places to the left, so 7.0% is .007 as a decimal.
Expressed as a decimal, and rounded to two decimal places, sqrt(3240) = ±56.92. Expressed as a surd, this is equal to 18 sqrt(10).
Expressed as a surd, sqrt(392) = 14 sqrt(2). Expressed as a decimal, rounded to two decimal places, sqrt(392) = ±19.80
Expressed as a surd, sqrt(1756) = 2 sqrt(439). Expressed as a decimal, rounded to two decimal places, this is equal to ±41.90.