There is 1/2.54 inches per centimeter.
10. This is very clear on any standard ruler
centermetre
yes
There are 100 square millimetres in 1 square centimetre.
centermetre stick
2 centermetre
The question, as stated, cannot be answered sensibly. 40x40 inches is a measure of area, with dimensions [L2]. A centimetre (not centermetre!) is a measure of distance, with dimensions [L]. The two measure different things and basic dimensional analysis teaches that you cannot convert between measures with different dimensions such as these without additional information.
250 cm 1 meter = 100 centimeter 1 centimeter = 0.01 meter
Apart from the fact that there is no such thing as a centermetre, the question does not say what units the 4.11 refer to. Is it 4.11 hours? or 4.11 miles or 4.11 degrees or 4.11 grams ...
How many inches in 5ft8inches
about 4 inches, well thats how how many inches my spoon is., or maybe 5 inches
How many inches is a pen