The three numbers are 52, 53, 54.
52+53=105 105+54=159
-0.37 is negative thirtyseven-hundredths, so in a fraction that would be -

. 37 is a prime number, so it isn't divisible by anything, meaning <span>
- 
is in simplest form.</span>
It is 18 because the radius is half the diameter and 9 x 2 = 18.
The seamstress will need 12 inches of special fabric.
D. 1mm/10cm is the correct answer choice.