The area of the room is :

and if the cost is 1.25 per square foot then the total cost will be:

is $340 dollars
8765.82 is s how many hours are in one year exactly
If it is 18.5 meters then your answer would be 1,850 because there are 100 centimeters in 1 meter
In three dimensions, the cross product of two vectors is defined as shown below

Then, solving the determinant

In our case,

Where we used the formula for AxB to calculate ixj.
Finally,

Thus, (i+j)x(ixj)=i-j