Nothing wrong with multiplying 6 square feet by 3.99 as long as 3.99 is just a number and the answer would be 3.99 x 6 = 23.94 square feet
21 feet times 19 feet = 399 square feet
21*19 = 399 square feet.
The answer depends on the units used for 21x19: inches, metres, kilometres? Since that information has not been provided it is not possible to answer the question sensibly.
7 will go into 399 57 times with no remainder. So 399 divided by 7 is 57.
It is: 399/1000 times 100 = 39.9%
21 feet times 19 feet = 399 square feet
399 square yards is 333.61 square meters.
21*19 = 399 square feet.
12 times with a remainder of 27
The answer depends on the units used for 21x19: inches, metres, kilometres? Since that information has not been provided it is not possible to answer the question sensibly.
399 cubic miles = 5.87319828 × 1013 cubic feet
399
7 will go into 399 57 times with no remainder. So 399 divided by 7 is 57.
19.974984355438178
66.5 x 6 = 399
It is: 399/1000 times 100 = 39.9%
$399 is £328.81