You probably want to ask how many cubic foot are 20 liters.
1 000 liters makes 1 m3. 1 ft = 0.3048 m. So,
0.020 m3 [1 ft/0.3048 m]3 = 0.70629 ft3
It would be a 20 by 20 ft square
26.66
15 x 20 = 300 square feet.
340 square feet
Difficult! Multiply 20 x 12...
A room measuring 20' x 20' = 400 square feet
340 square feet.
It would be a 20 by 20 ft square
20 x 25 = 500.... so there are 500 square feet in an area 20 foot by 25.
The area of 12 foot times 20 foot are 240 square feet.
A=lw A=20*80 A=1600 feet2
90
26.66
15 x 20 = 300 square feet.
20 btu per square foot
340 square feet
600 square feet. Just multiply length by width - the answer is the square footage.