90 mm
10mm=1cm therefore 90mm=9cm
there are 10mm in a cm, so 88mm is closer to 9cm because it is 8.8cm
9cm
90mm is 9cm
9cm = 90mm
90mm divided by 10 = 9cm
9cm equals 90mm
it is less than because 1cm. = 10mm. so 9cm. is 90mm. and then you add the 9mm. to that 90mm.
9cm + 5cm + 9cm + 5cm = 28cm
9cm