6 in a half inches
There are 2.54 cm in an inch, therefore there are 2.54 X 3.5 = 8.89 cm in 3 1/2 inches.
There are 350 centimeters in 3 and a half meters
(3.5in)(2.54cm/in) 8.89cm
150
3 and 8 tenths
Half of 3 meters 60 centimeters is 1 meter 80 centimeters.
500 centimeters
There are 797 centimeters in 797 centimeters.
1.27 centimeters
Two and a half centimeters.
3.5cm
Each meter is 100 cm, so two and a half meters in centimeters is 250 centimeters. Try googling "two and a half meters in centimeters."
Oh, dude, seriously? Like, come on, it's not rocket science. There are 100 centimeters in a meter, so in 3 and a half meters, you just multiply that by 3.5. That's 350 centimeters. Easy peasy lemon squeezy.